U.S. Coin Collector's Resource | All About Coins

Mint Errors

Broken Planchet After StrikingIt will be obvious, to the experienced mint error-variety collector, that many of the coins pictured below are considered varieties and not mint errors. However, this author classifies any coin that makes it into collectors hands, with an “alteration” (accidental or purposeful) in their design, planchet, metal content or any other various deviation from the original and intended state of the coin, by or at the US Mint, as a “Minting Variety”.

Visit our main US Mint Error website for more detailed information and images. Click Here

If you think you have a mint error feel free to post an image and ask about it on our mint error coin forum

Capped Die (Mushroom / Bottle Cap)  Mint Errors 


Clipped PlanchetSplit Copper Plating

A slightly crescent clipped planchet and the force of the strike managed to split the copper clad layer, revealing the zinc planchet underneath.

 Mule Coins

A Lincoln Memorial Cent struck with a Roosevelt Dime Die. It called a “Mule” because one side is struck with a different coin die. So what do you call it a one cent, a dime or an eleven cent piece?

Cent Struck On A Dime Planchet Stock

2000-P Lincoln Memorial Cent struck on a 2000 Roosevelt Dime Planchet, and a Die Clash. The coin is not silver but copper-nickel clad.

Broad Strike

1999 Lincoln Cent Broadstrike mint error. This example is almost perfectly centered, but there are some that are off-center. However, and Broadstrike coin that’s more than 10% off-center is considered an Off-Center struck coin.

Repunched Mint Mark “RPM”

1960-D Lincoln Memorial Cent Re-punched Mint Mark, commonly called an RPM.

Die Clash

Coin overlays for Die Clash ID

1984 Lincoln Memorial Cent with a Die Clash. This occurs when an obverse die strikes the reverse die (without a coin between them), and some of the design of the opposite die is struck on both dies. Then a planchet is struck showing design elements on each side of both dies.

Minor Die Clash

2000 Sacagawea Dollar wounded eagle.


1917 and 1946 Lincoln Wheat Cents with lamination peels and cracks.

Doubled Die Varieties

All of the above are true double die mint errors, and not to be confused the “Poor Man’s” double dies which are not true double dies, but abraded dies or from worn dies. It’s also not a double struck coin either. A true double die happens after the engraving lathe accidentally carves a double image on the master hub that is transferred to the die. If the second image appear flat or shelf-like then it’s not a double die.

Brockage Strike

1943 Lincoln Wheat steel cent struck in collar error.

Multiple Strikes

1967 Lincoln Memorial cent with multiple strikes.

2007-P James Madison Double Struck Presidential Dollar. A new discovery.
Pattern Design

2000-P Sacagawea Dollars. The left picture is an accented hair, pattern, Cheerios Dollar, and the right picture is a normal tail feather. Recently PCGS discovered that not all Cheerios Dollars are patterns. 

Missing Clad Layer

Obverse Clad Layer Missing

Roosevelt Dime missing the clad layer on the reverse.

Off Center Strike

Roosevelt Dime Off-Center Strike (no date). This coin is struck around 50% off-center with most of the date showing. The most sought after are coins showing full date, and coins can be off-center anywhere from 1% and up.

Struck With Cracked Die

1794 Flowing Hair Half Dime with die cracks. Modern coins with die cracks don’t bring extra value, unless it affects the design dramatically. However, in older type coins it can signal a possible variety and bring a premium.

Wide Rim Variety

1979-P “Near Date” Susan B. Anthony Dollar (left) with a normal rim dollar (right). You tell the “Near Date” by the thick rim that causes the date to be nearer to the rim. It is actually a variety, not an error.

Minor Double Die

2005-D Minnesota Statehood Quarter Extra Tree Error. The error has been reported on the 2000-P and as many as 11 variations might exist.

Die Chip

2007-P Roosevelt Dime with a die chip.

Die Crack

2005 Jefferson/Buffalo Nickel with a ‘speared’ bison. You can see the die crack through the middle of the Bison, and looks like a long and thin scratch.


1974 Eisenhower Dollar double clip.


1894 Indian cent double struck, 75% off center.


1867 Indian Cent 1867/67 over date.


1923 Peace Dollar die adjustment strike.


1937-D Buffalo Nickel 3 legs.


1918 Buffalo Nickel 1918/7 over date.



  1. alhi808 alhi808
    November 14, 2009    

    Have you heard of a 1994 Licoln penny where the words go right up to the edge of the rim- In God We Trust. On the reverse the United States of America is also to the edge of the rim. The weight of the coin is 2.5 grams. We haven’t found anything on the web about another 1994 Lincoln w/ this strike.

  2. November 15, 2009    

    It sounds like the coin is struck off center, but anything less than 10% off center isn’t considered a mint error, because the mint allows that much for coins.

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