Glossary
Choose a Mint Error Category Below

Brockages
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Capped Dies
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Counterbrockages
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Die Adjustment Strikes
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Double Denomination
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Double/Multiple Strikes
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Experimental Strikes
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Gold Errors
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Hub Trials and Die Trials
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Martha Washington Test Pieces
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Mated Pairs
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Mules
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Off-Center Struck Coins
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Overstrikes
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Spectacular Errors
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Two-Headed Coins
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Two-Tailed Coins
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Transitional Errors
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Uniface Die Trials
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Uniface Strikes
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Wrong Planchet / Off-Metal