Glossary

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Bonded Coins
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Die Adjustment Strikes
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Double Denomination
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Double/Multiple Strikes
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Dual Countries
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Experimental Blanks
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Experimental Strikes
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Experimental Surface
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Feeder Finger Strikes
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Gold Die Trials
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Gold Off-Metals
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Intentional Errors
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Martha Washington
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Mated Pairs
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Multiple Errors
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Pattern Mules
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Plasters
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Proof Errors
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Specimens
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Spectacular Errors
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Transitional Errors
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Two-Headed Coins
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Two-Tailed Coins
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Uniface Die Trials
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Unique Coins


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1999 Cent On A 1997 Dime

Double Denomination Errors

One of the most expensive, popular, and desired types of errors are the double denominations. This error happens when a coin is struck on a previously struck coin of a smaller denomination. Examples are a cent on a struck dime, and a nickel on a struck cent. The most dramatic are those with considerable design visible from the original strike. There are a few known double denominations with different dates. The error illustrated here is a 1999 cent on a struck dime from 1997 - 2 years apart!