Categories
Bonded Coins
Broadstrikes
Brockages
Counterbrockages
Die Adjustment Strikes
Die Caps
Die Trials
Double Denomination
Double/Multiple Strikes
Dual Countries
Dual Mint Marks
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. |
