Striking Anomalies: The Top 10 Off-Metal Error Coins in U.S. Numismatic History

1943 Lincoln Cent on Copper Planchet

1965 Roosevelt Dime on Silver Planchet

1971-D Kennedy Half Dollar on Silver Planchet

1977-D Quarter on 40% Silver Planchet

Eisenhower Dollar on Bronze Lincoln Cent Planchet

Walking Liberty Half Dollar on Quarter Planchet

Sacagawea Dollar on Zinc Lincoln Cent Planchet

1964 Kennedy Half Dollar on Clad Quarter Planchet

1965 Quarter on 90% Silver Planchet

1982 Lincoln Cent on Mysterious Silver Alloy Planchet