Buffalo Nickels
1937-D 5C Three-Legged, FS-901, MS62 NGC. Concentric bands of vivid rainbow toning visit both sides of this Mint State 3-Legged nickel. The coin is struck from a late state of the dies -- which clashed earlier on, and then were famously effaced at the bison's right foreleg by an overzealous Mint employee. The die fatigue is almost as stunning as the toning.
HID02901242017