Glossary

Categories

Brockages
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Counterbrockages
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Die Adjustment Strikes
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Die Caps
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Die Trials
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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 Errors
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Gold Off-Metals
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Martha Washington
Test Pieces

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Mated Pairs
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Mules
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Multiple Errors
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Off-Centers
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Off-Metals
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Overstrikes
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Pattern Die Trials
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Pattern Errors
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Pattern Mules
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Platinum Errors
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Proof Errors
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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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SBA Dollar Struck 50% Off-Center

Off-Center Struck Coins

Off-center coins are one of the most common and best known types of errors. This happens when a blank which is supposed to be fed into the press, lands in the collar improperly. When this occurs only part of the blank is between the upper and lower dies. When the dies strike the blank, only that part will be struck with a design.