This is a Discovery Coin that was recently sold after being featured on the front page of the November 19, 2001 issue Coin World.
This is a 1920 Buffalo Nickel struck on a full size copper planchet of the same diameter, thickness, and weight of a Buffalo Nickel!! Its composition is 89% CU, 8% ZN and 3% SN. The weight is 4.96 grams which is 76.54 grains. This unique Off-Metal Buffalo Nickel is unreported in Breen, Judd and Pollock.
Buffalo Nickels struck on Cent Planchets are very scarce. Buffalo Nickels struck on Dime Planchets are extremely rare. This is the first and only reported Buffalo Nickel struck on a Full Size Copper Planchet. There is a possibility that it is a unique copper test piece and was never melted and destroyed.
Pedigree. Originally in the Mike Chambers' world famous collection of U.S. Off-Metal Mint Errors. It was sold to a well known East Coast dealer, who specializes in Patterns, exotic coins and other rarities. He submitted it to NGC for authentication, and upon certification was immediately purchased by Byers Numismatic Corp. It was then sold to a collector.