This is an extremely rare Buffalo Nickel struck on an elliptical planchet. There are only 2 known for the entire series from 1916 to 1938. Both were in my Mint Error Collection for 40 years. I sold the other one in a MS 63 holder for $11,500 a decade ago.

This mint error was authenticated and certified by PCGS as Mint State 62. U.S. type coins struck on elliptical planchets are extremely rare.