Click Here For A Complete List Of Over 1,400 Articles From Mint Error News
Unique Proof Ike Dollar "Clover Leaf" on Nickel and Cent Planchets
The first known proof Ike Dollar "Clover Leaf" struck on three dime planchets sold in a Heritage Auction for $105,000...
Newly-Designed Jefferson Nickel Reverse Die Cap
There are only two known die caps on the newly-designed Jefferson Nickel (2006-2024)...
The Only Certified 1861-B Germany Saxony Taler Mule
This rare Germany Saxony Silver Taler is a mule. It was struck with a mismatched obverse and reverse die...
PCGS Certifies 1887 Morgan Dollar Struck 55% Off-Center with a Brockage Reverse MS 63
This amazing off-center Morgan Dollar with a brockage reverse was previously unknown to the numismatic community...
Unique Canadian Olympic Commemorative Off-Metal Mint Error
This 1974 Canada $5 Commemorative for the Montreal Olympics is a unique off-metal mint error...
Unique Canadian Silver Jubilee $100 Off-Metal Mint Error
This unique 1977 $100 Canadian Silver Jubilee coin was struck on a Canadian 50c Planchet...
Unique Kennedy Half Likely Struck on Experimental Cent Planchet
This unique off-metal Kennedy Half was just authenticated and certified by NGC as Struck on a Copper-Zinc Planchet, 83% Cu, 17% Zn (2.4 grams)...
Unique Charles A. Lindbergh 14-Inch Obverse Bronze Galvano For The 1928 Congressional Gold Medal by Laura Gardin Fraser
It appears that this is the only Laura Gardin Fraser galvano in private hands...
Charles A. Lindbergh 14-Inch Plaster Model Of The Reverse Design For The 1928 Congressional Gold Medal by Laura Gardin Fraser
This features Laura Fraser's dramatic representation of an iconic flying eagle on the reverse of the medal...
Unique 15-Inch Oklahoma Run Plaster Model by Laura Gardin Fraser for the 1957 Oklahoma Semi-Centennial Medal
This unique Oklahoma Run plaster is absolutely amazing...
Oregon Trail Memorial Half Dollar Plaster Model by Laura Gardin Fraser
It is one of two known and is in superb original condition...
1971-S Proof Silver Eisenhower Dollar Double Struck Both Strikes Off-Center
It is hard to imagine a proof off-center and double struck Eisenhower Dollar that is more dramatic...
Unique Proof Bicentennial Ike Dollar Double Struck, 2nd Strike Off-Center
This proof Bicentennial Dollar major mint error is unique in many ways and has no equals...
Unique Liberia Gold Pattern
This is a unique Liberia gold $5 pattern featuring James Monroe from their Presidential Series...
Unique Proof Kennedy Half Struck on Silver Dollar Planchet
This proof Kennedy Half major mint error is unique in many ways and has no equals...
Unique GOLD Buffalo Certified by NGC AU 53
As amazing as it sounds, this is a 1913 Buffalo Nickel struck on a U.S. $5 Gold planchet...
1973-S Proof Eisenhower Dollar Unique Mated Pair
This unique Proof Eisenhower Dollar mated pair is the first known of this type of error...
UNIQUE GOLD QUARTER
This U.S. GOLD QUARTER is far and beyond the most incredible modern U.S. mint error ever to be discovered...
Unique Proof 1971-S Eisenhower Dollar Overstruck on a San Francisco Assay Office Medal
This unique Proof 1971-S Eisenhower Dollar Overstruck on a San Francisco Assay Office Medal is featured in the Platinum Session of the August 2022 Heritage US Coins Signature® Auction...
Unique Shield Nickel Multi-Denomination Mated Pair Error Discovered
Long time error specialist Greg Bennick has discovered a multi-denomination mated pair of uncirculated 1867 Shield Nickels...
New Discovery: Unique Proof 1973-S Kennedy Half Dollar Die Piece and Die Break Error Mated Pair
This unique mated pair is a new discovery and fresh to the market from an old time collection...
New Off-Metal Discovery: 2018-P Roosevelt Dime on Steel Planchet
This is a fascinating new discovery. U.S. Roosevelt Dime off-metals are very rare...
Modern Jefferson Nickel On Bowtie Scrap
This discovery piece is the only known bowtie clip on a modern Jefferson Nickel struck between 2006-2022...
NGC Certifies $20 Liberty Head Double Struck With Partial Collar
All major mint errors on U.S. gold coins are extremely rare. Very few are known in the $20 Liberty Head series...
Unique 1942 Lincoln Cent Pattern J-2079 Struck in Aluminum
This 1942 Lincoln Cent is a regular die trial issue but struck in aluminum with a plain edge...
Unique 1910 Lincoln Cent Uniface Test Strike
This 1910 Lincoln Cent Uniface Test Strike was certified by PCGS and is unique and unreported...
1915 Lincoln Cent Struck on Full-Size Nickel Planchet
This is one of two known authenticated and certified Lincoln Cent off-metal prior to 1916...
Unique Proof 1973-S Eisenhower Dollar Broadstruck on Bronze Planchet
This is a unique and amazing 1973-S Proof Eisenhower Dollar struck on a bronze planchet...
GreatCollections Reveals Discovery of 2021 - $10 Type 2 Gold Eagles with "W" Mint Mark
These discovery coins show how full of surprises our industry can be...
Mated Pair of 1974-S Lincoln Cents Struck by 2 U.S. Cent Obverse Dies
It stands alone in a class by itself in terms of rarity and fascination and combines an incredible...
Second Martha Washington Half Dollar Obverse Die Discovered
A collector and reader of Mint Error News just purchased the second known Martha Washington Obverse Die from Mike Byers Inc...
PCGS Certifies Proof 40% Silver Kennedy Half Dollar Elliptical Strike Clip With Brockage Reverse
It is also considered struck scrap but it is actually an elliptical strike clip...
PCGS Certifies Unique Pair of Proof Ike Dollars Struck on the End of the Planchet Strip
This unique discovery is the only known pair of proof Ike dollars that were struck on the end of the planchet strip...
NGC Certifies First Known Sacagawea-Presidential Dollar Mule
The intriguing discovery coin combines an obverse and reverse from two different dollar series...
Extremely Rare German 5 Mark Overdate
The most likely scenario is that the Mint used a leftover 1931 dated 5 Mark Oak Tree die...
Unique German Third Reich Matte Proof Set in Silver
It is amazing that this set survived World War II and was preserved for 8 decades...
NGC Certifies Amazing & Unique Proof Ike Dollar Mated Pair With Two Different Off-Metals
This amazing unique discovery is the only known off-metal mated pair on any U.S. proof coinage that combines two different off-metals...
U.S. Proof Quarter Overstruck on Canadian George V Quarter
This unique 1970-S Proof Quarter from the United States was overstruck on a Canadian Quarter that circulated during the reign of King George V from 1911-1936...
Proof 1977-S Nickel Overstruck on 1977-S Dime Double Denomination with Two Dates
This is the only double denomination of the four known showing two dates...
Unique Proof Kennedy Half Dollar Double Denomination
This newly discovered and certified Proof Kennedy Half Dollar on a struck Washington Quarter is the only known...
Unique Proof Double Denomination Bicentennial 1976-S Quarter Double Struck on a Struck Dime
This is the only known proof Bicentennial Quarter double struck over a struck Dime...
Set of 4 Weakly Struck American Eagles
Coins that are weakly struck occur when a coin is struck from the press with very little pressure...
Unique Pattern 25¢ Major Mint Error
Major Mint Errors on Proof U.S. coins are rare...
NGC Certifies Unique 1952 Great Britain Penny
The only penny struck by the Royal Mint in 1952 is a numismatic unicorn...
Unique 1974-S Aluminum Cent
The Only 1974 Aluminum Cent that can be Privately Owned...
Unique Bavarian Medal Gold Off-Metal Strike with Mint Engraving
The reverse includes six lines of hand engraving from the Bavarian Mint...
Unique Spanish 100 Reales Die Trials Struck in Gilt Copper
This is a unique and spectacular set of obverse and reverse die trials for Spain's 1856 Proof Gold 100 Reales...
NGC Certifies Unique Great Britain Lead Die Trial
This is the only known 1911 Great Britain 1/2 Sovereign Die Trial...
Unique Dual Mint Mark Discovery Proof Bicentennial Quarter on Cent Double Denomination
This is the only known proof U.S. coin that shows two mint marks from two different U.S. Mints...
1973-S Proof Clad Ike Dollar Double Struck On A 50¢ Planchet
This is one of the most spectacular Proof Ike Dollar Mint Errors...
Unique China One Ounce Gold Panda Partial Collar
This is the only known major striking error on the one ounce gold Panda coin...
Proof 1976-S Jefferson Nickel Obverse Cud (Die Break) Just Discovered
A few extremely rare Proof 1976-S (Bicentennial Year) Jefferson Nickel Cuds were just discovered...
Double Struck Broadstruck 1973-S Proof Clad Ike Dollar
This is an amazing double struck and broadstruck PROOF Ike Dollar...
Unique Proof Double Denomination Dual Date Bicentennial 1976-S Quarter on a Struck 1967 Dime
This is the only known proof Bicentennial Quarter struck over a Roosevelt Dime...
Unique 1969-S Proof Dime Mated Pair
This is one of the most dramatic, fascinating and intriguing proof errors ever discovered...
Dual Country Double Denomination Panama 1c Double Struck on U.S. Lincoln Cent
The coin rotated 90 degrees with a beautiful second strike that is 30% off-center...
1973-S Proof Clad Ike Dollar Double Struck On A 50¢ Planchet
This is one of the most spectacular Proof Ike Dollar Mint Errors of all time...
PCGS Certifies Unique Standard Silver Pattern
This discovery coin was struck without Barber's initial on the ribbon...
NGC Certifies Unique Great Britain Crown Young Head Silver Die Trial
NGC recently authenticated and certified this unique Great Britain Silver Crown Die Trial Piedfort Pattern...
Great Britain Britannia Proof Gold Mule
There are only 3 known authenticated and certified obverse mules on the Britannia Proof Gold Coin Series from Great Britain...
NGC Certifies Unique U.S. 25¢ Feeder Finger From The Denver Mint Grabener Press
This is the only known full-size feeder finger for any U.S. denomination that has not been struck by coin dies...
NGC Certifies Unique Two-Tailed Off-Metal 10 Cent Euro
The only known 10 Cent Euro struck with two reverse dies and is off-metal on a chrome plated iron planchet...
PCGS Certifies Two-Headed Off-Metal Russia 50 Roubles
Should Be Struck in Gold and in Proof...
NGC Certifies Unique Mint Canceled Martha Washington Quarter Test Strike
Newly redesigned Martha Washington dies were used to strike test pieces at the United States Mint in 2011 and 2012...
NGC Certifies Unique Great Britain Lead Die Trial
This unique die trial has a thickness of 5.69mm and was encapsulated in an NGC holder that is twice as thick...
NGC Certifies & Encapsulates Unique Pair of Mercury Dime Dies
This is a recent discovery of a unique pair of 1935 Mercury Dime obverse and reverse dies from the Philadelphia Mint...
DISCOVERY COIN: Mule Die Clash
Mint Error News Magazine reports the discovery of the unique mule die clash discovery coin certified by PCGS...
NGC Certifies Unique Gold $1 1852 Judd #138 On A Cut-Down Gold Plated Seated 10¢
It is the only known U.S. pattern or coin that was gold plated (gilt) at the Mint and then overstruck...
NGC Certifies Unique "Mint Cancelled" Error Coin
This 2007-D Washington quarter was originally struck on a Sacagawea $1 planchet before being cancelled by the US Mint...
NGC Graders Discover "Light Finish" 2018-S Silver Reverse Proof Set Half Dollars
NGC will attribute this new variety by request through its VarietyPlus service...
"Two Tailed" Dual Date Double Denomination Mule
In this case a 2006 Chilean 5 Pesos reverse die was mis-matched with a 2006 Chilean 1 Peso reverse die...
PCGS Certifies Unique Canada Platinum Striking
This is the only known Canadian $100 platinum striking of any design or series...
NGC Certifies 2016 Silver Eagle with Very Rare Mint Error
The severity of the die clash is among the most dramatic ever seen on a US Mint bullion coin...
NGC Experts Identify Mint Error on 2014 5 oz Silver ATB Coins
The Great Smoky Mountains coins are missing a "P" mintmark that ought to accompany their matte finish...
PCGS Certifies Unique Mated Pair of Proof Gold Die Caps
This is a unique mated pair of the only known reverse die caps for any Canadian gold coin...
NGC Certifies Mule Error on 2017 Canadian Timber Wolf Coin
A rare error on a large modern coin is identified by NGC and confirmed by the Royal Canadian Mint...
NGC Certifies Unique Proof Platinum Mint Error
With a mintage of only 5,000 it is remarkable that a major mint error was released...
Fascinating Canadian Gold Mint Errors
This is one of the most fascinating mint errors ever struck at the Royal Canadian Mint...
NGC Grades Rare Canadian Silver Maple Leaf Error
A wrong planchet error such as this is extraordinarily rare for a silver bullion coin due to the extensive scrutiny of these coins...
NGC Certifies 17 Experimental Glass Cents and Tokens
The patterns were struck during World War II by the Blue Ridge Glass Corporation...
NGC Certifies Mexico 60 Pesos Struck on U.S. $10 Liberty
This fascinating and dramatic numismatic rarity would be the centerpiece of a major world gold coin collection or a collection of U.S. $10 gold coins...
Unique "Two Headed" Off-Metal
This is one of three known U.S. or World coins that were struck...
NGC Certifies Unique GOLD Belgium Franc Obverse Die Trial (1904 Design Overstruck on 1903 Design)
This is a unique, spectacular and dramatic Belgium Franc struck in GOLD...
NGC Certifies Unique Cent
1982-D Small Date variety previously unknown in bronze...
NGC Grades Rare Canadian Silver Maple Leaf Error
A unique Canadian Maple Leaf error is certified by NGC...
PCGS Certifies Unique TWO-HEADED Nickel
This is the only known U.S. regular issued coin of ANY denomination that was struck with two obverse dies...
NGC Certifies Unique 1943 Lincoln Cent 13-Piece Set Including an Experimental Antimony Test Piece
These were part of the metallurgical testing done by the Philadelphia Mint for an alternative to the pre-1943 bronze cent...
NGC and PCGS Certify Previously Unknown Experimental Blanks and Planchets
This is part of the U.S. Mint's history and production of experimental coinage...
NGC Certifies Pair of Unique 1880 Spain 50 Centimos Coins
These two strikings were most likely presented to King Alfonso XII, whose portrait appears on the obverse...
NGC Certifies Pair of Rare, Historic French Mint Errors
Two mirror brockages were likely the very first (or only) coins struck with the reverse die cap...
PCGS Certifies TRANSITIONAL 1989-D Lincoln Cent Struck on a 3.1 Gram Copper Planchet (Pre-1983 Cent Planchet)
It encompasses not only the popularity of the 1983 copper transitional Lincoln Cents but also the excitement and mystique of being struck by the Denver Mint 6 years later...
NGC Certifies Unique Double Denomination
It is unique since it is a double denomination that is 4 years apart...
PCGS Certifies Unique Proof Canadian $15 Struck on a $50 Maple Leaf 1 oz. Gold Planchet
This is one of the rarest, most expensive and spectacular Canadian mint error coins known...
PCGS Certifies Walking Liberty Half Struck 50% Off-Center - Finest Known & Most Off-Center
This is the finest known and most off-center Walking Liberty Half...
From the Grading Room: 1964 Lincoln Cent Struck On a Coin of India
NGC Graders share an intriguing and visually dramatic error coin that was recently submitted for certification...
PCGS Certifies Unique SPECIMEN Canada 1/2 oz Maple Leaf $20 Brass Uniface Die Trials
These are the only known Canadian $20 SPECIMEN brass die trials of any design or series...
NGC Certifies First Foreign Gold Pattern Ever Struck by United States
NGC graders have certified a rare 1855 Peruvian Gold Pattern 2 Peso struck at the Philadelphia Mint....
PCGS Certifies Unique 1990-D Lincoln Cent TRANSITIONAL Struck on a 3.1 gram Copper Planchet (Pre-1983 Cent Planchet)
Unbelievably, here is an authenticated, certified and graded unique transitional Lincoln Cent struck in 1990...
(16) Proof 40% Silver Ike Dollar Planchets Including PCGS Discovery Coin Discovery Group of 15 NGC Certified Blanks From The San Francisco Hoard
For four decades, there was just one unique Proof 40% Silver Ike Dollar blank known to the numismatic community...
(12) Proof Clad Ike Dollar Planchets Including 2 NGC Discovery Coins Discovery Group of 10 NGC Certified Blanks From The San Francisco Hoard
For years, there were just two Proof Clad Ike Dollar blanks known to the numismatic community...
PCGS Certifies Unique Proof $100 Canada National Parks Commemorative Gold Coin Reverse Die Cap & Brockage Obverse
This Canadian Gold $100 Reverse Die Cap is the only known obverse or reverse die cap for any Canadian gold coin...
NGC Certifies Proof Canadian $15 STRUCK IN GOLD (should be struck in silver)
This is one of the rarest, most expensive and spectacular Canadian coins known...
NGC Certifies 1976-S 5C Obv Impression Struck Into Center of $1 Planchet (Proof Nickel/Dime Mule)
This unique striking is a proof mule, struck by the San Francisco Mint on a proof Ike Dollar planchet...
NGC Certifies Newly Discovered Platinum Eagle Variety
A 2007 W platinum $100 piece in proof with an obvious die-polishing error has been found...
Another Platinum Eagle Frosting Error Surfaces
The word FREEDOM is frosted instead of brilliantly polished...
PCGS Certifies Washington Dollar Struck on 5¢ Planchet
There are only two known off-metals in the Presidential Dollar series...
New Mint Error Type Discovered
This is a unique discovery and first reported in Mint Error News...
NGC Certifies A Peace Dollar Double Struck With 2nd Strike 80% Off-Center
Double Struck Peace Dollars are extremely rare and are highly coveted by mint error collectors and dealers...
Double Struck 1884-CC Silver Dollar GSA/NGC Certified
Major Carson City mint errors are among the most desired and valuable U.S. errors...
Australia Two Tailed Gold Nugget
To date, this is the only certified gold coin that was struck from either two obverse dies or two reverse dies...
Presidential Dollar Mint Errors
Major mint errors in the Presidential Dollar series are very scarce...
Great Britain 20P Mule
Here is a new and exciting major mint error to come from the Royal Mint in London...
Monroe Dollar Missing Edge Lettering Discovered In 2008 Philadelphia Mint Set
Recently a few mint sets were discovered that contained the Monroe Presidential Dollars without the edge lettering...
Incredible Error Note
This is the second error note that I have handled...
Hayes/Grant Mule Medal
So far only two have been identified since it's 2003 release...
From the Grading Room: 1948 Obverse Die Trial for the Franklin Half Dollar
An unusual and likely unique Franklin Half Dollar die trial...
Adams First Spouse Bronze Medal Mule Discovered
A new mule has been recently discovered on the U.S. First Spouse Medal...
PCGS Grades First Native American $1 Coin Missing Edge Lettering
On March 6, 2009, PCGS received the first reported and only-known Native American dollar with the edge lettering missing...
Bolivia 10 Centavos Mint Error Set
Here is an incredible set of Bolivia 10 Centavos mint errors...
PCGS Certifies Unique Set of SPECIMEN Silver Certificates
Specimen notes are extremely rare and very few are known to exist today...
A Serendipitous Mint Set Find: (2007) SMS James Madison Missing Edge Lettering Dollars
They were not regular currency issue strikes but instead were found in Mint Sets and therefore have the satin finish...
Feeder Fingers Discovered From Several South American Countries
The first coin struck on an actual feeder finger was headline news in the numismatic community...
NGC Certifies Proof John Q. Adams $1 Struck On An Elliptical Planchet
As incredible as it sounds, another proof Presidential Dollar was just discovered struck on an elliptical planchet...
1836 Half Dollar With Doubled Edge Lettering
Initiation of the Presidential Dollar coin program in 2007 brought about a renewed interest in lettered-edge coins...
From the Grading Room: 1973-S Dollar on a Copper-Nickel Planchet
This superb gem Eisenhower Dollar was struck at the San Francisco Mint for inclusion in the series of "blue pack" silver-clad dollars...
NGC Certifies Proof Jefferson Presidential Dollar Struck on Elliptical Planchet
Unbelievably, a second known U.S. proof coin struck on an elliptical planchet has been discovered...
New 2007 Mint Errors
There have only been a few major mint errors discovered in 2007...
NGC Certifies 2008 Monroe Dollar Edge Lettered Planchet
This is the second one known dated 2008...
2007 India 5 Rupees Double Struck on Feeder Finger
Recently, several coins struck on feeder fingers from India were discovered...
Unique NGC Set of Three Paraguay Gold Overstrikes
This is a unique set of nineteenth century Paraguay patterns that were overstruck on previously struck gold coins...
From the Grading Room: 1825 Great Britain Pattern Farthing Mule, Struck in Platinum
This example is one of just a few known...
From the Grading Room: $50 Gold Eagle Error
The number of mint error coins actually escaping careful inspection at the mints has remained extremely small for the American Eagle series...
NGC Certifies Double Struck 1884 Carson City Morgan Dollar
This double struck Carson City Morgan Dollar is a significant rarity for several reasons...
NGC Certifies 1875-CC $20 Liberty Partial Collar
Major mint errors on U.S. gold coins are very rare...
1851 3¢ Obverse & Reverse Die Trial Struck on Cardboard
It is clearly embossed with lettering and design elements raised...
ANACS Certifies "Two Headed" 2 Cent Euro
This exciting discovery is a unique 2000 France 2 Cent Euro struck by two obverse dies...
Trio of Walking Liberty Half Dollar Errors
This trio of Walking Liberty Half Dollar mint errors is quite possibly the most impressive that has ever been offered...
Modern Euro Off Metals
Several of these may be the only ones known to date...
1864 2¢ Obverse Die Cap Mated With Brockage
Major mint errors in the 2¢ series are very rare...
Sacagawea Dollars with an Experimental Finish
Mike Byers discovered the original hoard of these Sacagawea Dollars with experimental finishes...
Modern Euro Off Metals
Several of these may be the only ones known to date...
NGC Discovers Proof Silver States Quarters Die Crack Errors
NGC recently identified die cracks on two issues of silver proof States Quarters...
UNIQUE 2001-P Sacagawea Dollar Struck on a 2001 Kentucky State Quarter
A unique coin with great details & PQ luster...
1973-S Kennedy Half Dollar Struck on Struck Aluminum Token
Proof Kennedy Half Dollar mint errors are very rare with only a few known...
NGC Certifies Set of Two-Headed and Two-Tailed Great Britain Half Pence
There are approximately thirty genuine two-headed or two-tailed coins that have been authenticated by ANACS, PCGS or NGC...
Unique 1920 Standing Liberty Quarter Struck on Peru 20C Planchet Certified by NGC
This is the only known Standing Liberty Quarter struck on a foreign planchet for the entire series...
Martha Washington Half Dollar Test Piece
The Martha Washington design has been used by the Mint as an all-purpose test piece since 1965...
Double Struck Draped Bust Dollar
This is one of the most spectacular early type major mint errors that I've ever handled...
1982 Canadian Dime Muled with Cent Die
To date, this is the only reported specimen of a Canadian Dime that was muled with the reverse die of a 1982 Cent...
Canadian 1978 Cent Struck on a U.S. 1973 Cent
A coin struck on dies from two different countries is extremely rare...
ANACS Certifies Sacagawea Dollar Struck on a Nickel Planchet
It is amazing that this 2005 dated Sacagawea Dollar was discovered struck on a nickel blank...
Unique 1999-P Lincoln Cent Struck on 1980-D Dime
It is one of the most intriguing and rare mint errors that I've ever handled...
Martha Washington Test Piece Struck on SBA Dollar Blank Planchet With Experimental Edge
The Martha Washington design has been used by the Mint as an all-purpose test piece since 1965...
1880/9-S Morgan Dollar Struck 10% Off-Center PCGS MS 63
This is the only known Morgan Dollar struck off-center that is also an overdate...
Rare Franklin Half Dollar Struck 70% Off-Center
It is always exciting to see a Franklin Half Dollar struck off-center since there are only a few known...
Martha Washington Test Piece Struck on Nickel Size Planchet
The Martha Washington design has been used by the Mint as an all-purpose test piece since 1965...
3 Decade Old Catalog Found
A 26 page catalog containing the finest major mint errors with photographs, descriptions and prices...
Just Discovered & Certified by NGC: A Two Headed Off-Metal
To date, this is the only known "Two Headed" or "Two Tailed" mint error that is also an off-metal...
J425/P497 Struck Over an 1840-O Quarter
The discovery of an 1865 pattern quarter struck over an 1840-O quarter may shed light on a series of pattern coins where the actual date of striking has long been a question...
Ike Dollar Struck on a 3.7g Clad Planchet
There is mystique and excitement surrounding this recently discovered Ike Dollar...
Unique 1965 Kennedy Half Dollar Discovery
This discovery mint error is unique and it is still a mystery why it was struck...
1989-D Lincoln Cent Transitional Double Struck on Bronze Planchet
This is a unique transitional major mint error...
1838 Gobrecht Struck Over 1859 Dollar
It is one of several overstrikes produced circa 1859-60...
Unique 1860 $5 Clark Gruber Reverse Die Trial
This uniface die trial is a fascinating piece of Gold Rush history...
Unique Pair of 1825 English Gold Sovereign Die Trials
Obverse and reverse uniface pattern strikes...
Double Struck Gold Staters of Brutus
A small group of double struck gold staters were discovered...
1865 $1 Indian Gold Proof Triple Struck Reverse
This is the only known proof $1 Indian dated 1865...
Philippine 1 Piso Struck Over Struck U.S. Quarter
This is a spectacular double denomination involving coinage from two countries...
1876 Indian Cent Struck on a 3¢ Nickel Planchet
Indian Cent off-metals are very rare...
Unique 1999 SBA Dollar Struck on an Aluminum Feeder Finger
The only known SBA Dollar struck on an aluminum feeder finger...
Die Trial Splashers Just Discovered
A selection of die trial splashers...
1861 Indian Head Cent Deep Obverse Die Cap
There are only a few known Indian Head Cent die caps...
Martha Washington Nickel
The Martha Washington design has been used by the Mint as an all-purpose test piece since 1965...
1876 Indian Cent Struck on a 3¢ Nickel Planchet
Indian Cent off-metals are very rare...
Off-Center Gold Crown
A Gold Crown from Gebralter of Queen Elizabeth II struck 5% off-center...
1866 5¢ J-517 Double Struck Mule Pattern
This pattern is a deliberate muling of two dies...
Double Struck Double Eagle
This Double Struck Double Eagle was sold in auction by Heritage...
Another Martha Washington Test Piece Discovered
This design has become the U.S. Mint's all-purpose design for testing new compositions and planchet sizes...
Unique 3 Piece Cent and Dime Mated Set
This is an incredible combination of multiple errors...
1983-P Jefferson Nickel Struck on CU Cent Planchet
This extremely rare 1983 Jefferson Nickel TRANSITIONAL was struck on an all copper Cent planchet...
1795 Flowing Hair Dollar Overstruck on 1794 Dollar
To the best of our knowledge, no similar specimen has ever been located or identified...
Unique 3¢ Nickel Struck on 1¢ Stock
This is the only known off-metal mint error in the 3¢ Nickel series...
The Only Known Walking Liberty Half Dollar Off-Metal
This is the only known Walking Liberty Half Dollar struck on a Foreign Planchet for another country...
Mated Pair of U.S. $1 Silver Eagles
A 3M sanding disk adhered to the lower die and was struck into the reverse of the blank planchet...
Unique Cap Bust Quarter Mint Error
Any major mint error in this series is extremely rare...
On the Edge of a Major Discovery
With the underlining reality that these Hong Kong coins have actually been struck on UK coinage planchets with a customary UK reeded/milled edge...
One-of-a-Kind Pieces
The finest error in my Swedish error collection is this 2 Ore 1964 with a struck in tool...
Mint Errors Listed in 1879 Catalogue
It is one of the earliest listings of major mint errors that we've ever seen...
Connecticut Quarter Unique Fold-Over
A fold-over coin is one of the most dramatic types of errors...
PCGS Certifies Unique Jefferson Nickel Die Trial
The only known die trial for the entire Jefferson Nickel series...
Discovery of Error on Experimental Currency
This note combines the ultimate in rarity with a mistake of noteworthy importance arising on experimental paper...
Double Struck 20¢ Piece
Major mint errors on 20¢ Pieces are unheard of...
1910 Lincoln Cent Uniface Test Strike
It is amazing that there is no reference to this 1910 Test Strike Piece anywhere...
ANACS Certifies Unique "Two Tailed" Euro Set
This is one of the most exciting mint error discoveries...
Coins Struck on Finger Feeder Tips
After a recent tour of the U.S. Mint at Philadelphia...
Two Headed Shilling
The first reported and authenticated two-headed English Victorian Shilling...
Unique Quarter Multi Struck on Copper Core
This is a spectacular major mint error...
Chile 10 Pesos Double Struck on Feeder Finger
This is one of the most incredible and spectacular Major Mint Errors that has ever surfaced...
ANACS Certifies Euro Cent Struck With Two Reverse Dies
ANACS was featured in an article on this coin in the October 7, 2002 Issue of Coin World...
2000-P MA 25¢ Struck on Exp Planchet
This discovery is unique...
1964-D Dime Struck on US Cent Alloy Planchet
This is the only known Roosevelt Dime struck on a U.S. Copper Cent alloy planchet...
U.S. $20 1872 Obverse Die
As incredible as it seems, this is the second $20 Liberty Head Obverse Die to surface in the last two years...
SBA Dollar Struck on Experimental Planchet
Four SBA Dollars struck on experimental planchets have been discovered...
1920 Buffalo Nickel Struck on Copper Planchet
This is the first and only reported Buffalo Nickel struck on a Full Size Copper Planchet...
2000-P Sacagawea Dollar Struck on a SBA Dollar Planchet
This is a 2000-P Sacagawea Dollar struck on a left over clad Dollar planchet intended for the striking of 1999 Susan B. Anthony Dollars...
U.S. $20 1882 Obverse Die
This die struck the obverse design of the $20 Liberty Head double eagle gold coin over a hundred years ago...
Unique Dual Date/Dual State
An unknown type of error until this discovery piece...
Two Headed and Two Tailed Coins
There are approx. thirty known genuine two-headed or two-tailed coins that have been authenticated and certified...
Martha Washington Test Pieces
The U.S. Mint conducted metallurgical tests in 1999 on the golden colored manganese-clad planchets which would later be used for the Sacagawea Dollar...
PCGS Certifies Two Canadian "Two Tailed" Cents
Both of these "Two Tailed" coins were struck with two reverse dies...
