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Click Here For A Complete List Of Over 550 Articles From Mint Error News

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...