Glossary
CategoriesBonded Coins Broadstrikes Brockages Counterbrockages Die Adjustment Strikes Die Caps Die Trials Dies Double Denomination Double/Multiple Strikes Dual Countries Essay Trial Strikes Experimental Blanks Experimental Strikes Experimental Surface Feeder Finger Strikes Foreign Coins Struck on U.S. Planchets Galvanos Gold Die Trials Gold Errors Gold Off-Metals Hub Trials Indents Intentional Errors Martha Washington Test Pieces Mated Pairs Mules Multiple Errors Off-Centers Off-Metals Overstrikes Pattern Die Trials Pattern Errors Pattern Mules Plaster Models Platinum Errors Proof Errors SMS Mint Errors Specimens Spectacular Errors Struck Scrap Struck Thru Transitional Errors Two-Headed Coins Two-Tailed Coins Uniface Die Trials Unique Coins |
  Experimental BlanksThis is part of the U.S. Mint's history and production of experimental coinage. These experimental blanks and planchets were previously unknown to the numismatic community. |
