Glossary

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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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Coins Struck on Finger Feeder Tips

After a recent tour of the U.S. Mint at Philadelphia, it was discovered that the minting process had changed to some degree. One of the changes was that “feeder fingers” were used during the striking of all denominations of U.S. coins. Prior to this tour, U.S. coins that were struck on feeder finger tips were authenticated and described as being struck on aluminum scrap. Coins from all modern denominations have been discovered that were struck on the tips of these feeder fingers.