Categories
Bonded Coins
Broadstrikes
Brockages
Counterbrockages
Die Adjustment Strikes
Die Caps
Die Trials
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
Uncanceled Dies
Uniface Die Trials
Unique Coins
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Pattern Errors
Major mint errors on United States patterns are extremely rare. There are a few known broadstrikes, double strikes, off-centers and off-metals.
Pictured above is a unique and spectacular mint error, a proof pattern off-metal. It was struck on a copper nickel planchet instead of a silver planchet. It's composition is 76% Cu and 24% Ni, which is copper-nickel. It weighs .99 grams. PCGS certified it Proof-65. It is the only known copper-nickel Standard Silver Dime in the entire 1869-1870 series, from Judd #837 through Judd #872. The official Standard Silver Dimes were struck in silver, copper and aluminum. |
