This Discovery Coin 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.
Featured on uspatterns.com