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Unique Set of Canadian Quarters Overstruck by 1978 Canadian Cent Dies
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This is an amazing and unique set of Canadian quarter mint errors...
1916 MacNeil Quarter Dollar Obverse & Reverse Galvanos
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The 1916 MacNeil Quarter Dollar obverse and reverse galvanos are featured on the USPatterns website...
1877 Half Dollar Reverse Galvano
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The reverse galvano for the central portion of the 1877 half dollar J1512-3/P1676-7 is featured on the USPatterns website...
PCGS Certifies German Gold Obverse Die Trial Strikes
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It is amazing that after 400 years, this set of gold Die Trials remained together, intact and preserved in gem mint state condition...
Sensational 1852 Gold Ring Dollar
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In 1852, the United States experienced a series of remarkable events and developments...
Unique Set of Frederick the Great Plaster Model and Galvano
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This is a unique plaster model and galvano from the estate of Heinz Rodewald...
Spectacular Morgan Dollar Pattern Struck In Copper
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In 1878, a series of significant events unfolded that would influence various aspects of society and technological development...
The 7th Peace Dollar Struck at the San Francisco Mint
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This incredible 1922-S Peace Dollar was the 7th Coin Struck at the San Francisco Mint, as notated on the NGC holder - AND we have the original letter...
Rare 1902-S U.S. Philippines (USPI) Peso Double Struck Error Fantasy Coin
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In 2019 and 2020, Daniel Carr minted fantasy-date 1902-S Philippine Pesos in Brilliant Satin and Proof-like finishes...
Mint Error Coin Chronicles: Off-Center Strikes
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When the dies don't strike a planchet in the right spot, the resulting error is hard to miss...
United States Mule Mint Errors
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A mule occurs when a coin is produced with mismatched dies...
Presidential Dollar Off-Metals
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There are only four known Presidential Dollars that were struck either on wrong U.S. planchets or struck on other U.S. coins...
Dramatic Cent Error Coins
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Here are some of the rarer and more dramatic cent errors produced at the United States Mint...
An Incredible and Rare Lincoln Cent Wheat Reverse Mirror Brockage on a Silver Dime Planchet
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Mirror brockages in the Lincoln Cent Wheat Reverse series are extremely rare with approximately ten known...
Jim Halperin's Collection of Fraser Plasters
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There are a few Fraser plasters that are included in his private collection...
1932 Laura Gardin Fraser Quarter Plaster Model and Original Photograph
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This 1932 quarter reverse plaster model for Laura Gardin Fraser's winning 1932 Washington Quarter submission is an amazing and significant discovery...
Rare Set of Official John F. Kennedy Presidential Inaugural Medal Obverse and Reverse Plaster Models
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This amazing set of John F. Kennedy Inaugural Medal plasters combine historical significance, extreme rarity, and an incredible pedigree...
Mint Error Coin Chronicles: Rotated Dies Error
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The orientation of the two sides of a coin in relation to one another should be consistent; when it's not, this error occurs...
Flying With Your Coins!
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Air travel is the fastest method across the USA with coins and here are a few suggestions for your journey...
Unique Pair of Judd #2210 Martha Washington 5¢ Test Pieces
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Newly redesigned Martha Washington dies were used to strike test pieces at the United States Mint...
Unique Peace Dollar Splasher & Plaster by Anthony de Francisci
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Quite simply there are no other known splashers or plaster models of the de Francisci 1921 Peace Dollar...
Unique Mated Pair of Proof Ike Dollars Struck Off-Center on 1¢ Planchets
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This unique proof mated pair of Eisenhower Dollars was sitting in an old-time collection for decades...
A Collection of Flying Eagle & Indian Cent Mint Errors
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Charmy Harker "The Penny Lady®" wanted to share her collection of Flying Eagle and Indian Cent Mint Errors...
Collecting Double Struck Error Coins
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A favorite of every error coin collector is to have a double struck error coin in their collection...
Major Errors Struck by Private U.S. Mints
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Major mint errors from silver rounds to gambling tokens are very popular and are eagerly sought out by collectors...
The "Libertas Americana" Metallurgical Trial Pieces
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These pieces are fascinating pieces of history and this article attempts to list a complete census of the known specimens...
Unique Proof Kennedy Half Bonded Pair With Struck In Copper Planchet
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This bonded pair of a Proof Kennedy Half and a 1.6 gram Copper planchet is unique and visually breathtaking...
A Dramatic Struck Thru Error - The "1861 Buffalo" Quarter
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This "1861 Buffalo" Quarter is an especially appealing struck-thru grease Quarter, both for its eye appeal and subject matter...
Unique Proof Ike Dollar Struck on Outer Clad Layer
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This 1976-S Proof Type 1 Eisenhower Dollar is unique among Ikes, and all U.S. Dollars, of all years and types...
Unique 1972-S Lincoln Cent on Struck Silver Dime
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Although this was an intentionally struck mint error, it is unique and very dramatic...
Unique 1972 Eisenhower Dollar Overstruck Twice With 1972 Cent Dies
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One of our readers wanted to share his amazing Eisenhower Dollar mint error...
Two Incredible Kennedy Half Mint Errors
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A reader of Mint Error News who collects rare proof U.S. mint errors wanted to share two special Kennedy Half mint errors from his collection...
Error Coin Collection
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One of our readers wanted to share his collection of error coins and numismatic rarities...
A Cosmic Error You Have To Look To The Stars For!
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To this day, not very many people are even aware of this error...
Bicentennial Ike Dollar Struck on 40% Silver Planchet
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This is an amazing and extremely rare Eisenhower Dollar off-metal...
Struck Thru Error Coins
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Major struck thru error coins are very interesting and extremely collectable...
1973-S Blue Ike Struck on Clad Planchet
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This is an amazing and extremely rare Eisenhower Dollar off-metal...
Unique Broadstruck 1906-D $20 Liberty Gold Double Eagle
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This is the only known United States $20 Gold Piece that was broadstruck out of the collar...
Collecting Carson City Errors
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My Journey started as a young man where I collected coins and enjoyed the hunt more than anything...
A Closer Look: The GSA 1882 Carson City Morgan Dollar Off Center
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There is more than meets the eye when looking at the 1882-CC off-center GSA Morgan dollar...
Unique Double Eagle Reverse Hub Trial in Lead
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This is a unique $20 Double Eagle reverse hub trial attributed to 1857...
Lincoln Dime Mule Census
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These are particularly eye appealing and generally it appears that the smaller dime size die does not have any cupping effect on the struck coin...
Ask Dave
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Dave Camire, NCS President, NGC Finalizer and NGC Mint Error Expert answers your numismatic questions...
Eye Appeal And Error Coins
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Error coin collectors look at eye appeal as the most important factor in evaluating a coin, even more so than the grade...
Analyzing A Fake Die Cap
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The following is an interaction that I had with one of my customers who thought they had a genuine mint error...
Unique Triple Struck Flipover Peru Gold 8 Escudos
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This 1741 Peru Gold 8 Escudos is a very rare South American gold coin...
Extremely Rare Lincoln Cent Wheat Ears Struck Off-Center on Silver Dime Planchet
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This is an extremely rare off-center Silver Cent...
Unique Collection of Lincoln Cent Rarities Surfaces
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Whitney Collection of Wrong-Planchet Cents Certified by NGC...
Pattern "Struck-Overs"
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Pattern coins, by definition, are experimental pieces created to test new designs, different metal alloys...
The Errors All Around Us
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In coin collecting circles we often see a lot of emphasis placed on searching for coins of certain dates...
World Error Coins and the PDS Error System
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The (Planchet, Die, Striking) PDS error classification system is simple and easy to remember for collectors...
A Collection of Romanian Error Coins
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This is a journey through the modern Romanian history illustrated by my error coins from this nation...
1875-S 20 Cent with Reeded Edge
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It is possible that it was a mint error and somehow was struck with a reeded edge at the San Francisco Mint...
Detecting Alterations to Coins to Appear as Errors
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There are many signs illustrating why this coin is yet another altered coin meant to fool collectors...
The Subjectivity of Pricing
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The pricing of patterns is very subjective...
Collecting Clipped Planchet Error Coins
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Error collectors usually end up collecting different types of clip error coins...
PCGS Certifies a Cent Bonded to a Magnetic Screw
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This is one of only two known Lincoln cents that were bonded with a magnetic screw...
Mint Error Coin Chronicles: Broadstrikes
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Coins that lose their collars end up running loose beyond their boundaries...
Proof Ike Dollar Double Struck on Kennedy Half Dollar Planchet
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This is one of the most spectacular Proof Ike Dollar Mint Errors available today...
Unique Proof 1973-S Kennedy Half Dollar Double Struck on Washington Quarter Double Denomination
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It is a unique double struck double denomination and belongs in a world-class mint error collection...
Proof Ike Dollar Struck on Clad Dime Planchet
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These are very rare and highly prized by Ike Dollar collectors and mint error collectors...
1873 Closed 3 $5 Unique Specimen with Experimental Finish
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This unique 1873 $5 Closed 3 Specimen strike has an experimental finish and is a hybrid between a proof and a mint state coin...
Counterfeit Detection: Spark-Erosion 1874 Three Cent Nickel Die Trial
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Three Cent nickels were struck in 75% copper and 25% nickel with a silver-gray color, but the coin submitted to NGC appeared to be made entirely out of copper...
Mushroom Error Coins
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These coins are larger than a normal size coin with some examples that have expanded to a huge size...
Proof 197X-S Ike Dollar Double Struck on 2 gram Aluminum Shell Gas Token
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This is an amazing and spectacular proof major mint error...
Mint Error Coin Chronicles: Partial Collars
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A Partial Collar error occurs when there is a malfunction of the striking press...
1968-D Penny Struck on a Silver Dime Planchet
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This is the rarest type of U.S. transitional off metal mint error...
NGC Certifies 1943 Lincoln Cent Struck on Curacao 25 Centstukken Planchet
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This world-class 1943 Lincoln Cent major mint error is many times rarer than the 1943 copper Cent...
Mint Error Coin Chronicles: Transitional Errors
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Errors where a previous year's planchet was used are some of the most exciting in all numismatics...
Struck Thru Cloth Error Coins
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Coins have been struck thru all different types of materials and objects leaving an impression of the item in the coin...
Hawaiian Mint King Kalakua 1883-1983 Kala Dala Proof Struck on Scrap
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The proof error coins shown here were broadstruck on an off metal piece of scrap...
USPatterns.com - Mint Errors Mistaken For Patterns
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In many cases, the error pieces listed are rarer and more valuable than the die trials they are confused with...
David Camire Visiting Mints Around The World
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David has visited all three US mints (numerous times) and continues to add to his world mint visits...
Collecting Ultra Modern Major Mint Error Coins, 2002 - Present
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Collecting ultra modern mint error coins is fascinating because there are so many different designs and error types possible...
USPatterns.com - Pattern Mint Errors
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Here are some examples of misstruck pattern pieces...
Certified but Not Graded: Adjustment Strikes, Struck Thrus & Other Mint Errors
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There are a few types of error coins that are eligible for NGC certification, but do not receive a grade...
Counterfeit Detection: 1942 Lincoln Cent Mint Error
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What looks like a double strike will make you do a double take, but it's not real...
Counterfeit Detection: 1955 Doubled-Die Obverse Cent
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This off-center coin proved too good to be true...
Extremely Rare "Peacock" Variant 150 Yuan 20oz Silver Coin
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An exceptional and nearly flawless example of this important variant of the "Peacock" 150 Yuan...
Unique Standard Silver Dime Off-Metal Proof Pattern
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This is a unique and spectacular mint error, a proof pattern off-metal...
Amazing 2016 Shield Cent Multiple Mint Error
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This amazingly rare modern cent major error coin has so much going on...
Netherlands Silver 1/2 Ducaton Pattern in Proof
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The only known proof of these ducaton coins are the gold ones...
Unique 1977 Lincoln Cent Struck in Aluminum at The Philadelphia Mint
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There are several possibilities as to how this unique Lincoln Cent was produced...
Liberty Seated Dime Struck Off-Center With Obverse Partial Brockage
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This is an amazing and unique combination of major errors on a Seated Dime...
Extremely Rare $50 Gold Eagle Double Struck Partial Collar
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Major Mint Errors on the 1oz Gold U.S. $50 American Eagle series are very rare...
Unique California Fractional Gold Incomplete Punched Planchet
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A fascinating aspect of this mint error is that the partially punched planchet is octagonally shaped...
Unique Pair of California Fractional Gold Clipped Planchets
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This is the only known double clipped planchet on any fractional gold coin...
Spectacular State Quarter Die Cap
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The die cap is so deep and the "exit strike" is at such an angle creating a shape like a baseball-cap...
Extremely Rare California Fractional Gold Overstrike
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This is a 1863 California Fractional Gold 25¢ overstruck on a previously struck 1860/50 Gold 25¢...
Unique & Unlisted German 5 Mark Die Trial
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This unique and unlisted Germany 5 Mark reverse trial strike is the adopted design in silver...
Extremely Rare Buffalo Nickel Off-Metal
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This amazing fully lustrous Buffalo Nickel struck on an Argentina 10 Centavos planchet...
American Bank Note Company Experimental Stamp Printing Plate
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This experimental stamp printing plate from the American Bank Note Company is one of only two known...
Unique American Bank Note Company El Salvador Stamp Printing Plate
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It features a set of all four different denominations of stamps on the plate...
Official Royal Mint Plaster for the Great Britain 1983 One Pound
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This is a fascinating official Royal Mint plaster that was designed for the reverse of the new Great Britain 1983 One Pound coin...
1938 New Rochelle Half Dollar PCGS Specimen 67+ CAC
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This PCGS Specimen 67+ CAC is the second finest known...
1831 Proof Gold ½ Sovereign DOUBLE STRUCK
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Interestingly, despite the high production standard for this Proof offering, its legends show faint traces of being double-struck...
Gold-Plated Brass Maple Leaf Die Trials in Lucite
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This is a fascinating and historical set of Gold-Plated Brass Die Trials issued by the Royal Canadian Mint...
Double Struck 1904 $20 Liberty Rotated 180 Degrees in Collar
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Major mint errors on U.S. gold coins are extremely rare...
Extremely Rare Bavarian Gold Service Medal
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This is an amazing world-class numismatic treasure, combining several numismatic and historic factors...
Proof Kennedy Half Dollar Double Struck on a Gas Token
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This is an amazing and spectacular proof major mint error...
Unique Double Denomination Kennedy Half Dollar on a Quarter
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It is the only known Kennedy Half Dollar from 1965-1970 struck on a struck Quarter...
The Northern Nevada Dollar Error Gallery
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We enjoy collecting dollar errors because with as many dollars as we buy and sell day in and day out errors in this series are still rarely seen...
Learn Grading: What Is a Mint Error?
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This installment in the series covers mint errors that can occur when something goes wrong with a coin's planchet...
Off-Center Lincoln Cent With Retained Wire Bristle
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The reverse of this 1998 way off center cent has a struck in and retained wire bristle...
Lincoln Cent Cancelled in India?
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One of our readers found this interesting Lincoln Cent that has been cancelled with a unique pattern...
Pair of Ethiopia 10 Dollar Silvered Bronze Specimen Pattern Uniface Die Trials
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They are a matched set of obverse and reverse uniface die trials from 1972...
Unique Canadian $20 Specimen Test Print
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This incredible and unique test print is for the Canadian 1954 $20 face and back...
Unique Off-Metal Canadian Mint Error
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This unique Canadian 50¢ dated 1970 is struck on a 72% silver and 28% copper off-metal planchet...
A Collection of India Patterns & Die Trials
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I recently acquired this set of patterns & die trials of a rare Baroda Rupee...
Unique & Unrecorded Proof Great Britain 1/2 Sovereign Gilt Reverse Pattern
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This is a unique and unrecorded proof gilt reverse pattern for the 1831 Great Britain William IV 1/2 Sovereign...
Uruguayan "Two Tailed" Dual Date, One Peso Mule
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Major errors from Uruguay are nearly unheard of and this is the first mule error from this country I have ever seen...
NGC Certifies Canada $15 Struck on Gold Planchet in Custom Multi-Coin Holder
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One of the four-known 1992 Canadian "Spirit of the Generations" Olympic silver coins to be struck in pure gold...
Pair of Gold Lincoln Medal Overstrikes Certified by NGC
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This is a fascinating pair of gold overstruck coins with an enigmatic history and production...
Unique Ethiopia Double Struck Gold Mule
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All gold mules are rare and this mule is unique for several reasons...
Unique Great Britain Queen Elizabeth II Crown Trial Strike
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This is a unique Crown die trial strike (1957) for preparing the copper-nickel Crown for Queen Elizabeth II in 1960...
Belgium Silver 50 Centimes Mule
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The reverse die is dated 1899 but was incorrectly muled with an obverse die dated 1907...
Lincoln Cent Double Denomination Mint Error
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It is the first year that dimes were struck in the clad composition and this is in demand in the 11-cent series...
1900 Indian Head Cent Multi-Struck 20% Off-Center On A Silver Dime Planchet
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This unique and spectacular mint error was intentionally struck at the U.S. Mint in Philadelphia...
1882 Shield Nickel Struck On A Cent Planchet
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This Shield Nickel was struck on a bronze planchet that the U.S. Mint intended to use for the production of Indian Cents...
An Exciting Collection of Major Mint Error Coins
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I wanted to share some exciting error coins with the readers of Mint Error News...
Unique Set of Mexico Proof Pattern Mint Errors
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This is a unique, incredible and dramatic set of 5 proof pattern mint errors...
NGC Counterfeit Detection: 1954-D Quarter (Counterfeit Second Strike)
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This coin is real, but the second strike error is not...
Unique Netherlands Gilt Cardboard Pattern
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Most cardboard trials are struck on just one side, but this one is made like an actual coin...
Unique Mated Pair of U.S. Currency Errors
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These $5 1950 notes stayed together during the entire printing and production process...
Unique Civil War Merchant Token Mule
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This famous unique Civil War merchant token as been in some of the world's finest numismatic collections of Civil War tokens...
A Collection of Bicentennial Washington Quarter Mint Errors
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I wanted to share some Bicentennial Washington Quarter Errors with the readers of Mint Error News...
Another "Off-Metal" World Coin Struck on a Different Country's Planchet
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This type of major error is exceedingly rare, but in this case I consider it to be unique...
A Unique Great Britain Guinea/Sovereign Pattern
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Recently surfaced after 200 years...
Washington Quarter Struck 70% Off Center on a Clad Layer Uniface Reverse
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I bought this coin thinking that it was an off center statehood quarter that split after striking error...
2007-D SMS Dime Obverse Die Cap
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In 2007 a batch of rare major error coins came out of the Denver mint...
A Unique Great Britain Mule
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It is a proof-only date and even rarer as a mule with the threepence obverse...
Martha Washington Reverse Die Used To Strike 1 Cent Experimental Test Pieces For U.S. Judd #2180
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There is only one other known Martha Washington Die in private hands...
More San Francisco Mint Off-Metal Errors
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I wanted to share some more San Francisco Mint Off-Metal Errors with the readers of Mint Error News...
NGC Grades Mistakenly Released Reverse Proof Cent
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The coin was not supposed to be available to the public until mid-April...
U.S. Lincoln Cent Overstruck by Bolivian Dies
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A unique error that is both dual country and a double denomination...
PCGS Certifies Ike Dollar Struck Off-Center on Taiwan $1 Planchet
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The coin was close to the size of a quarter but lacked the clad layers...
ICG Certifies 2019 Silver American Eagle Major Struck Thru
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There is extended plastic free floating in the ICG custom slab...
A Collection of San Francisco Mint Off-Metal Errors
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I wanted to share this group of San Francisco Mint Off-Metal Errors with the readers of Mint Error News...
NGC Certifies Unique Great Britain Proof Gold Pattern
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This unique gold pattern portrays a new portrait of Queen Victoria on the obverse...
NGC Certifies Unique Pair of Lincoln Medal Die Trials
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These Lincoln medals are uniface since each die was tested separately on a lead planchet...
U.S. Nickel Overstruck by Chilean 10 Pesos Dies
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This error likely occurred when the nickel was tossed into a bin containing 10 pesos planchets at the Santiago mint...
Canadian Mint Errors
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Here are some Canadian mint error that I wanted to share with the readers of Mint Error News Magazine...
A Collection of Euro Errors
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One of our readers from the Netherlands wanted to share his collection of Euro mint errors...
Extremely Rare Buffalo Nickel on an Elliptical Planchet
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There are only 2 known for the entire series from 1916 to 1938...
NGC Certifies Unique Argentina 8 Escudos Silver Die Trial
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It is fascinating that this unique obverse silver die trial exists for the already excessively rare gold 8 Escudos...
PCGS Certifies 1875 20 Cent Die Trial
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There are only 3 known die trials in the entire 20 Cent series...
Magnetic Screw Struck and Bonded onto Cent
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I wanted to share this incredible mint error with the readers of Mint Error News...
Strike Clips
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Among the different kinds of clipped coins is a rare type called a Strike Clip...
Legendary Off-Metal Error
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Wartime demand for copper caused the U.S. Mint to change the composition of the Lincoln cent planchet in 1943...
A Collection of Russian Mint Errors
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Mint error collector Alexander Filer from New Jersey wanted to share his incredible collection...
Argentina Striking Errors
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Argentina provides us with two striking errors...
Martha Washington Obverse Die
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Used to strike half dollar experimental test pieces for U.S. Judd #2131...
Unique Chilean Numismatic Rarities
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This is a spectacular collection of Chilean unique numismatic rarities...
Mint Error News Special Section: An Incredible Collection of World Mint Errors
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Jeff Ylitalo decided to share part of his fantastic world error collection...
Counterfeit Detection: Australia 1944 Florin Die Cap
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The sharply defined reverse reveals this florin die cap to be counterfeit...
NGC Certifies Rare 1942 and 1943 Wrong-Planchet Cents
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Two previously unknown 1943 "copper" cents and two other wrong-planchet errors were recently certified by NGC...
A Visit With Fred Weinberg
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It is always a pleasure to visit Fred Weinberg in his office to conduct business...
What Are Struck-Throughs?
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Struck-throughs range from very small to large...
Doubled Dies vs. Machine Doubling
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The distinction between genuine die doubling and mechanical doubling can be subtle...
A Collection of State Quarters Struck on Elliptical Planchets
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U.S. coins struck on elliptical planchets are scarce, making this an impressive collection...
Unique "Two Tailed" Off-Metal
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This is one of two known U.S. or World Coins in numismatic history that were struck by either two obverse or two reverse dies and struck on an off-metal planchet...
Unique Double Struck Peace Dollar
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Major mint errors in the U.S. Peace Dollar series are very rare...
NGC Certifies Colombia Pattern Oddity
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NGC recently certified a 1918 10 Peso pattern struck over a US WWI-era pin...
Highest Prices Realized for World Mint Errors in Heritage Auctions
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The following coins sold in past Heritage Auctions...
PCGS Certifies 1945 Netherlands East Indies Cent STRUCK IN GOLD At The U.S. Philadelphia Mint
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This is a proof pattern gold striking of KM-316...
A Collection of American Eagle Errors
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A reader of Mint Error News wanted to share his collection of rare American Eagle major mint errors...
Fred Weinberg's Price List of Major Mint Error Coins & Currency
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Wholesale prices list of major mint error coins & currency...
Rare Mint Error Found on a 2015 Silver Eagle
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A rare curved clip mint error is found on a 2015 American Silver Eagle bullion coin...
Undated Double Eagle Obverse Die Trial Judd-A1859-10, MS64 Unique Die Variant
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This is a unique striking and the only splasher of the Type One twenty...
NGC Grades Dramatic Error 1986 Silver Eagle
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A rare and prominent mint error was identified on a 1986 Silver Eagle that was found in a Mint-sealed box...
5 Crowns Struck In Gold
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Only one was approved as a final production piece...
World Errors
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It is the first euro/non-euro transitional error coin I have encountered...
Presentation Set of Federal Reserve Proofs
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These Proofs were printed from the actual currency plates on to card stock...
World Errors
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I wanted to share these world errors that I've recently purchased with the readers of Mint Error News Magazine...
Proof U.S. Quarter Struck Over Canadian Quarter
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This is a dramatic mint error since it involves two different countries and 29 years between strikes...
Walking Liberty Half Dollar Off-Metals
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This spectacular 1945 Walking Liberty Half Dollar was struck on a Dime planchet...
Variety vs. Mint Error
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Are you confused about varieties and mint errors...
Proof Paper Impressions
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These previously unknown examples of Proof Trial strikes were produced at the San Francisco Mint...
National Gold Bank Note Face Specimens
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Here is a set of National Gold Bank Not Face Specimens from The Kiddler National Gold Bank of Boston...
1923 Peace Dollar Clipped Planchet GSA Soft Pack MS 64 NGC
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It is exciting that this mint error is still in the U.S. Government GSA Soft Pack holder...
Small Dollars Missing Edge Lettering
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A comprehensive photographic overview of small dollar coins exhibiting a very popular type of error...
2 Double Denomination National Bank Notes
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Here are the finest known and unique pair of Double Denomination U.S. $20 & $10 National Bank Notes from 1882...
Five-Piece Set of No 'S' Proof Coins
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This Five-Piece Set of No 'S' Proof Coins is featured in the upcoming 2010 April-May Milwaukee, WI CSNS US Coin Auction #1139...
NGC Error Coin Gallery
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State Quarter mint errors are very popular with collectors...
1964 Double Denomination Errors
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Double Denomination U.S. mint errors are very popular and in great demand by mint error collectors...
NGC Certifies Standing Liberty Quarter Struck On A Cent Planchet
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Major Standing Liberty Quarter errors are extremely rare...
PCGS Certifies Type 2 $1 Gold Piece Full Brockage Reverse
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This unbelievable U.S. Gold Brockage recently surfaced at the 2009 ANA held in Los Angeles...
Having Residual Concerns About Residue?
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A closer look at "residue" on the surface of coins...
Indian Cent Mint Error Collection
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NGC recently certified Xan Chamberlain's personal collection of Indian Head Cent errors...
How To Tell A Premium Off-Metal Mint Error
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What can determine an average off-metal error to a premium error...
Historical Test Strike From Sweden
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This object is a part of my collection of Swedish pattern coins...
1971 Swedish Bonded One Kronas
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To this day, this is the only known bonded Swedish coin...
Canadian Mint Errors
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I collect major Canadian mint errors and would like the readers of Mint Error News Magazine to enjoy them too...
Presenting The World's Most Valuable Major Mint Error!
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PCGS Certifies the Finest Known Indian Head Cent Struck in Gold...
Curved Clip Coins
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Learn the Diagnostics of Authentic Mint Made Curved Clips...
Pattern Overstrike Certified by NGC
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Previously Unreported and Believed to be Unique...
Rare Russian Swedish Overstriking
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It was first struck as a Swedish 1 öre SM 1746 and then overstruck in Russia as a 1 Kopek 1758...
Story of the Bolivia 1942 50 Centavos Struck at the Philadelphia Mint on US Wartime Nickel Planchet
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It stands as the only, and therefore finest known example...
2000-P "Cheerios" Dollar
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Nearly all known examples were originally found in occasional boxes of Cheerios cereal...
Sacagawea Mated Pair
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Here is one of the most exciting mated pairs of U.S. coins that I have ever handled...
The United States Department of the Treasury $100 Specimen Note
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The specimen featured here included information from the United States Department of the Treasury regarding new security features...
What Is A Variety?
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There seems to be some confusion as to exactly what constitutes a variety...
2007 Denver Errors
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Even though the U.S. Mint has drastically reduced the inadvertent release of major mint errors in the last few years, a few mint errors struck by the Denver Mint in 2007 recently surfaced...
1984 Mint Error Catalog
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Here is another in a series of Mint Error Catalogs from Fred Weinberg...
1903 Louisiana Purchase Three-Piece Cardboard Die Trial Certified By NGC
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The cardboard has a rich, deep gold color, obviously meant to suggest the gold dollars that were soon to be struck...
Certified But Not Graded: Adjustment Strikes, Struck Thrus and Other Mint Errors
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There are a few types of error coins that are eligible for NGC certification, but do not receive a grade...
NGC Certifies Previously Unaccounted 1943-S Bronze Cent
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A previously unrecorded 1943-S Lincoln cent, erroneously struck on a bronze planchet and found in circulation by a teenaged collector over a half century ago, was recently certified...
South American Error Coins
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Here are some photos of South American Error Coins that were submitted by one of our readers...
50 Year Old Crazy Kid
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Then I started hearing about the "error" coins being found and I went into a new frenzy looking closely at all my state quarters...
1983 Mint Error Catalog
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Here is another in a series of Mint Error Catalogs from Fred Weinberg...
1903 Louisiana Purchase Three-Piece Cardboard Die Trial
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Cardboard impressions are obviously rare but they date back to 1849 for the gold dollar...
1983 China Mint Tour
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I have had the opportunity to take numerous tours of the official government-run Shanghai Mint through the years...
A Quartet of Swedish Double-Strikes
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I wanted to share this group of four 5 öre coins from the last 100 years of Swedish coinage...
Unique Gold Solidus
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The coin has two reverse sides...
World Errors
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Here are some more rare and unusual major mint errors from around the world...
1982 Mint Error Catalog
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Here is another in a series of Mint Error Catalogs from Fred Weinberg...
World Errors
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Here are a few of the more dramatic ones...
Presidential $1 Error Coins: James Monroe
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NGC has certified a few James Monroe $1 edge lettered planchets...
Chile and Costa Rica Errors
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One of the readers of Mint Error News Magazine wanted to show three of his world errors from South America...
Unique Fold-Over Clock
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This fold-over clock represents the only known clock of twelve fold-over Cents...
1981 Mint Error Catalog
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Here is another in a series of Mint Error Catalogs from Fred Weinberg...
World Errors
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Here are a few World Errors that I recently purchased from a collection that was assembled over many years...
Presidential $1 Error Coins: 2007 Proofs
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As a general rule, modern proof error coins are scarce...
What Are Die Caps?
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A die cap is caused when a struck coin sticks to the upper hammer die...
1979 Mint Error Catalog
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Here is another in a series of Mint Error Catalogs from Fred Weinberg...
World Errors
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Here are a few World Errors that I recently purchased from a collection that was assembled over many years...
1978 Mint Error Catalog
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Here is another in a series of Mint Error Catalogs from Fred Weinberg...
Presidential $1 Error Coins: George Washington
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This is the first in our new article series featuring Presidential $1 Error Coins...
Presidential $1 Error Coins: John Adams
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Just like the Washington $1 coins, the Adams coins show an abundance of edge lettering errors...
1998 Cent Struck On An Unplated Foreign Zinc Planchet
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Wrong planchet/off-metal errors are always in demand, and doubly so if they are accompanied by another error...
1979 Mint Error Catalog
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It is always exciting to compare current mint error prices with those from decades ago...
Two New "Extrusion Strikes"
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Extrusion strikes provide a fascinating exception to the notion...
Fascinating Mint Errors
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The new error coin collector would enjoy viewing these spectacular pieces...
Mint Error Prices: Then & Now
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Readers who are starting to collect mint errors will find it interesting to compare today's prices of major mint errors with those of 1975...
Mint Error News Museum: Gold Errors
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These are exciting and dramatic examples of major mint errors that we wanted to share with our readers...
Al's Coins 2007 Mint Error Price List
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Specializing in Mint and Currency Errors for 25 years...
Fred Weinberg's Price List of Major Mint Errors & Currency
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We proudly offer many dramatic & very Rare Type coins, and more current Errors (1960's + 1970's) that have not been on the market for 20-30 years...
PCGS Certifies 1965 English Penny Struck on a Gold Planchet
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This is one of the most spectacular major mint errors of all time...
1864 Large Date 2¢ Struck on a 1¢ Planchet
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Major mint errors in the 2¢ series are very rare...
Pennsylvania Quarter Double Struck Mated Cap Pair
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This is a spectacular and very dramatic mated cap pair...
1943 Lincoln Cent Struck on a Cuba One Centavo Planchet
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This 1943 Lincoln cent off-metal struck on a Cuba blank is unique...
1867 Shield Nickel With Rays Struck on Wrong Planchet
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Shield Nickel off-metals are extremely rare...
World Mint Errors
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I wanted to share some of my recent world mint error purchases with the readers of Mint Error News Magazine...
Morgan Dollar Reverse Die From San Francisco Mint
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There are only a few known Morgan Dollar canceled dies from the San Francisco Mint...
1859 Indian Head Cent Deep Obverse Die Cap
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This die cap struck so many blanks that it barely fits in the PCGS slab...
1862 Indian Head Cent Deep Obverse Die Cap
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This obverse die cap is so deep that it will not fit in a PCGS, NGC, ANACS or ICG holder...
Coin Punch Presses
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Here are photos of two different types of punches used at different times at the U.S. Mint...
Blanks & Planchets - The Best Little Secret In Errors
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Collecting Blanks & Planchets can be one of the most challenging collecting areas...
2004 Malaysian 10 Sen Die Cap Mated Pair
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Coin #1 is a Deep Die Cap and mated to Coin #2, which has an expanded uniface obverse...
Mated Pair of U.S. $1 Silver Eagles Certified by PCGS
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This is a spectacular One Dollar Silver Eagle mated pair struck at the Philadelphia Mint in 1986...
The Milt Cohen Collection
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It is fascinating to not only view all of the rarities that were in his collection, but also to remember where some of them have gone over the years...
Rare Kennedy Mated Sets Surface After Forty Years
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These were unknown until this small group was discovered...
Unique SBA Dollar Mated Pair
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This is one of two known mated pairs of SBA Dollars...
Kennedy Half Dollar Die Cap
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This is the largest Kennedy Half Dollar mint error that I've ever seen...
1999 SBA Dollar Multi Struck Die Cap
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This is the largest SBA Dollar mint error that I've ever seen...
1863 Indian Cent Reverse Die Cap
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This is a spectacular and dramatic deep dish shaped reverse die cap and is the size of a U.S. quarter...
Indian Cent Cu-Ni Reverse Die Cap
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Reverse die caps in the Indian cent series are actually rarer than obverse die caps...
1865 2¢ Obverse Die Cap & Brockage
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This is a spectacular 2¢ Die Cap...
NGC Certifies Double Struck 1873 $20 J-1344
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This is an extremely rare pattern which is also double struck...
1861 Clark, Gruber & Co. Twenty Dollar (K-8) Struck Over an 1853 U.S. Assay Office Twenty Dollar (K-19)
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This unique piece was unknown to us until a couple of years ago...
1829 Large Cent First Strike Brockage Reverse
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Most Large Cent brockages are very circulated and show the incuse wreath on the obverse...
Braided Hair Large Cent Struck 35% Off-Center
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It is one of the finest known off-center Large Cents...
Unique 1838 $5 Die Trial Splasher J-A1838-6
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PCGS recently authenticated and certified this spectacular $5 die trial...
Interesting World Errors
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A collection of mint errors from around the world...
MISSTRUCK UNITED STATES GOLD COINS
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Compiled by Dennis O'Reilly, March 2006...
2001-S Proof Rhode Island Quarter Double Struck in Silver
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To date, this is the only known proof State Quarter that is double struck and in Silver...
1965 Kennedy Half Dollar Unique Double Struck Mated Pair
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A dramatic and wild mint error pair...
The Bolt Collection
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It is incredible to see how inexpensive these mint errors were priced at over 30 years ago...
Mint Tour Photos
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From a recent Mint tour...
1812 Cap Bust Half No Edge Lettering
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It is one of only six known plain edge Bust Half Dollars in the entire series...
1996 Turkish Gold 25 Kurush Full Reverse Brockage
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Brockages on world gold coins are rare...
1875 3¢ Nickel Struck Fragment
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Major mint errors in the 3¢ Nickel series are very rare...
1859 Pattern Longacre's Liberty Head Uniface Die Trial
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This is one of three known uniface die trials by Longacre to create the 1859 U.S. Half Dollar pattern...
Extremely Rare 1937 Great Britain Half Pence Edward VIII Uniface Die Trial
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This die trial striking is of great numismatic importance and rarity...
1969-S Proof Roosevelt Dime Struck Clad Layer
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This is the first struck clad layer on any U.S. denomination struck in proof...
1965 Jefferson Nickel Special Mint Set Struck 5% Off-Center
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Major mint errors from Special Mint Sets are very rare...
1873 Seated Dime w/Arrows Struck 12% Off-Center
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All major mint errors in the Seated Dime series are rare...
1921 Morgan Dollar with an Adjustment Strike and a Misaligned Obverse Die
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Significant Morgan Dollar errors are rarely encountered...
PCGS Certifies 1869 3¢ Proof Silver Pattern In Aluminum With A Double Struck Obverse
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All proof errors are very rare as well as all U.S. Pattern errors...
Off-Metals Struck At The San Francisco Mint
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From a collection that was auctioned by the State of California...
1989-D Lincoln Cent Struck on Bronze Planchet
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There are three known transitionals of this type...
1990-D Lincoln Cent Struck on Bronze Planchet
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It should be on a copper-zinc blank planchet...
1974-D Ike Dollar Struck on 40% Silver-Clad Planchet
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This TRANSITIONAL is from the Denver Mint...
1944-P Jefferson Wartime Nickel Transitional Mint Error
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Struck on a copper-nickel planchet...
Silver Dollar Errors
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Silver Dollar errors such as these are quite scarce and extremely valuable...
1952 Lincoln Cent Double Denomination on Struck Dime
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One of the earliest dated Lincoln Cent double denominations...
1912 $2½ Indian Gold Struck 10% Off-Center
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Gold mint errors are rare if they are struck more than 5% off-center...
Copper Ingot - From the Fred Weinberg Collection -
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This ingot would have been melted, refined and eventually rolled into copper planchet strips...
Ethiopia Werk Muled With KM-18 Reverse
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This is only the second gold mule that I've ever heard of...
Mercury Dime Double Struck 2nd Strike 25% Off-Center
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This is a very dramatic double struck Mercury Dime...
1794 Franklin Token Incomplete & Curved Clips
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All Major Mint Errors on Colonial Coins are scarce...
America's first Double Denomination
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An Oak Tree Sixpence struck over an Oak Tree Shilling...
1886 Broadstruck Gold Dollar
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Such errors are highly unusual for anything struck in gold...
U.S. Coins - Weights & Specifications
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Click to view this informative chart...
1877 Seated Quarter Die Trial Adjustment Strike
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All die trials for US TYPE coins are extremely rare...
AD 582-602 Byzantine Gold Justin II Full Brockage
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Full brockages on ancient gold coins are extremely rare...
Lincoln Cent Struck on Bow-Tie Dime Scrap
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Bow-tie errors are very scarce, but to have an off-metal bow-tie error is unbelievable...
1875 CA Gold Fractional 25¢ Uniface Reverse
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All major mint errors on U.S. Gold coins are extremely rare...
1873 Octagonal 25¢ BG-793 CA Gold Fractional Rarity-5 Indian Head Full Obverse Brockage
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An incredibly rare obverse brockage of BG-793...
A Partial Brockage, Double Struck, Partial Collar Bust Dime with UNITED STATES spelled UNIAMERIATES
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This is a very unusual 1835 bust dime...
Canadian Mint Error
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This is an incredible and unique Canadian mint error...
1923-S Peace Dollar Die Trial Struck 5% Off-Center
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This is a spectacular Peace Dollar major mint error...
Ike Dollar Struck on a Dime Planchet
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It is estimated that there are only six to eight known Ike Dollars struck on clad Dime blanks...
Spectacular Double Struck Clark Gruber $20 Gold
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Clark Gruber was the most respected and well known financial and banking company...
Spectacular 1864 2¢ Obverse Die Cap With 2 Obverse Brockages
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Major mint errors in the 2¢ series are very rare...
Unique U.S. Territorial Gold Error
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The Bechtlers were the first large-scale Private Gold Coiners...
1853 $1 U.S. Gold Type 1 Broadstruck and Partial Collar
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This is the only known broadstruck Type 1 $1 Gold Piece...
Rare Pattern Mint Errors
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A selection of rare pattern mint errors...
Double Struck 1838 Half Dollar Pattern
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There are fewer than 2 dozen confirmed errors over the course of the entire pattern series...
Unique Obverse Die Cap
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Major mint errors in the Seated Half Dollar series are extremely rare...
1942 Walking Liberty Half Dollar Struck On A Silver Quarter Planchet
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There are only a handful of off-metal Walking Liberty Half Dollars known...
Unique 1981 Dime Cap Overstruck on a 1981 Cent Cap
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This Lincoln Cent was a deep obverse cap that struck many Lincoln Cents...
Barber Half Full Obverse Brockage
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This is one of the most spectacular major mint errors...
Buffalo Nickels on Cent Planchets
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I have listed the examples known to me of Shield nickels on cent planchets...
1918-S Standing Liberty Quarter Struck 13% Off-Center
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All Major Errors on Standing Liberty Quarters are extremely rare...
1898 Barber Quarter Obverse Die Cap & Brockage
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This is the only known obverse die cap in the Barber Quarter Series...
Draped Bust Dollar Struck 15% Off-Center
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This Draped Bust Dollar mint error is well known in the numismatic community...
Pair of Barber Dime Die Caps
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This is a unique pair of Barber Dime Die Caps...
1795 Flowing Hair Dollar Struck on Flawed Planchet
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It was struck on a planchet with major flaws on both sides...
1855 Large Cent Obverse Die Cap
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There are only a handful of Large Cent caps known...
Double Struck 1797 Draped Bust Large Cent
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Draped Bust Large Cents are rare in MS 65...
Spectacular Buffalo Nickel Off-Center on Cent Planchet
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Multiple errors on type coins such as the Buffalo Nickel are unheard of...
Double Struck 1924 Standing Liberty Quarter
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It is very rare to find any major mint errors in the Standing Liberty Quarter series...
Unique Morgan Dollar Struck 20% O/C & Brockage Reverse
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This is a spectacular major mint error in the Morgan Dollar series...
Two Headed Muling
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This two-headed muling, a business striking - not a proof, was recently rediscovered...
U.S. Half Cents: An Undiscovered and Unloved Series
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If you want a series to collect that won't break the bank...
(1943) Denver Quarter Struck on U.S. Steel Cent Planchet
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There are only a few known Washington Quarters struck on U.S. Steel Cent Planchets...
Two Dramatic Indian Cent Errors
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Most mint errors that are double struck are found with the second strike off-center...
1874 $1 U.S. Gold Type 3 Broadstruck
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This is the only known broadstruck Type 3 $1 Gold Piece...
1909 Indian Head Cent Struck on Silver Dime Blank
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This is a spectacular Indian Head Cent struck on a silver Dime blank intended for a Barber Dime...
1873 Shield Nickel Struck on Cent Planchet
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All major mint errors in the Shield Nickel series are very rare...
1964 Kennedy Half Dollar Struck on Clad Quarter Planchet
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This 1964 Kennedy Half is a rare TRANSITIONAL off-metal with only a few known...
2000-P "Mule" Sacagawea Dollar Reverse With States Quarter Obverse
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There are now ten (10) confirmed specimens of the Sacagawea Dollar/Quarter Mule...
1898 Barber Quarter Obverse Die Cap & Brockage
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This is the only known obverse die cap in the Barber Quarter Series...
A Two Country Double Denomination
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This is one of two known Large Cents overstruck on coins from other countries...
Indian Cents on Dime Planchets
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Indian Cents struck on silver dime planchets were often offered as patterns in early, circa 1900, auction sales...
Two Interesting Indian Cent Errors
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I'd like to share these two major mint errors from my collection of Indian Cents...
Rare Double Struck Liberty Seated Dime
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Double struck Liberty Seated Dimes are very rare...
1880-S Morgan Dollar Struck 40% Off-Center
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Many consider this off-center Morgan to be the finest known example for the series...
Spectacular Off-Center French Gold LD'OR
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This is a spectacular Major Mint Error on a 300 year old gold coin...
Unique Overstruck French Gold LD'OR
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This is a unique 1701-C ½ LD'OR struck off-center on a 1694 ½ LD'OR...
Unique Pattern Capped Die
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All major mint errors on proof patterns are very rare...
Double Struck Proof Pattern
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All proof errors are very rare as well as all US Pattern errors...
Spectacular Proof Gold Mule
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This is one of the most spectacular mint error mules of all time...
Unique German Die Trials
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This is a UNIQUE Die Trial set of four different German denominations...
1859 Indian Head Cent Obverse Struck on an 1857 Seated Half Dime
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This is one of the most dramatic and unique major mint errors ever discovered...
1853 U.S. Assay $20 Gold Piece Certified as Double Struck by NGC
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All Major Mint Errors on U.S. Gold Coins are extremely rare...
Fred Weinberg's Off-Center $20 Liberty
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This spectacular $20 Liberty Gold Piece is the farthest known off-center...
A Unique 1877 $50 Reverse Hub Trial in Lead
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There are only 272 Splashers known and only 43 Hub Trials known for the entire U.S. Pattern series...
Shield Nickels on Cents
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Shield nickels on cent planchets have often been mistaken for regular die trial pieces...
Unique Origami Error
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The term "origami" derives from the Japanese language for the art of paper folding...
1974 Aluminum Cent
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In the early-mid 1970's my grandfather ran a small pawn shop in Mississippi...
All on One Colonial Copper
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A Double Struck New Jersey, a Connecticut Undertype and a Brockage British Halfpenny...
1867 5¢ Obverse Hub Trial Struck in Copper
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Why produce an aluminum five-cent pattern?...
Unique 1860 $5 Reverse Hub Trial Struck in Copper
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Why a $5 pattern in 1860? According to Judd, in 1860 the U.S. Treasury discovered that...
Highlights From My Collection of Swedish Error Coins
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This is a journey through my Swedish collection of error coins...
Errors From The Royal Mint
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The Royal Mint of the United Kingdom has the reputation as being one of the tightest "quality controlled" mints in the entire world...
Matched Brockage Pairs
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Collectors of brockages know that all brockages are scarce...
1901/0-S $5 Liberty Gold Struck 10% Off-Center
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This piece is one of the most spectacular gold errors ever discovered...
Double Struck Swedish Gold Coin
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An 1884 20 Kroner gold coin that is double struck...
1862 Indian Cent Obverse Die Cap
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This is one of the most spectacular and dramatic die caps known...
1944 Steel Cent
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There is confusion whether some of the planchets designated for...
Eight Reales with Four Error Features
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These four error features are then as follows: off-center, flip-over, double-strike and partial brockage...
1846 PROOF $2½ Overstruck by 1846 PROOF $5
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This spectacular Pattern Die Trial is also a Major Mint Error...
Unique Double Denom Error Note
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Although there are double denominations known, this is the only one reported where...
An 1803/2 $5 Gold Piece with an Off-Center Obverse
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It is very rare for any U. S. gold coin to be also a mint error...
Off-Metal Walkers
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One of these coins is very rare, but to have two of them was amazing...
Thrill of the Hunt
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It sure is fun collecting error coins since they are so different and sometimes even unique...
Highlights From My World Error Collection
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For many years I have been interested in building up a collection of world error coins...
Double Struck French 5 Francs on Spoon!!
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This is one of the most outrageous, exotic, dramatic and unique mint errors that I have ever encountered in 25 years...
Triple Struck Double Denom Rev Brockage Off Metal or Triple Denom?...
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The slab label is too small for a full description of this fabulous error...
1963 Half Crown Struck on a Half Penny Copper Planchet
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A very rare off metal from Great Britain...
The Amazing Broken CC and Other Errors on Display
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This coin is the most dramatic error ever heard of on a Morgan Dollar...
Learning About Minting from an Errant Elephant
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What can we learn from this off-center piece?
A Fascinating 1790 Mule
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It has an estimated mintage of five pieces struck and is the first one we've ever seen of this type...
The Only Complete Set of 1999 State Quarters Struck on Exp Plan
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There are approx. 15 known 1999 State Quarters struck on Exp Planchets...
1916 Mexico Gold 60 Pesos Oaxaca Overstruck on an Earlier 8 Escudos Hand on Book Type
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A fascinating and dramatic numismatic rarity...
2000 Cent Flipover Strike
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It's a very appealing error to look at...
1999 SBA Dollar Struck on a Struck Georgia Quarter
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This is only one of two known obverse SBA caps...
The Story Behind An Interesting Overstrike Coin
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The coin that illustrates this story is a 1951 Norwegian 1 Kronor struck on a 1946 Swedish 1 Kronor...
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