The Lewis and Clark Expedition Bicentenary Nickel-Bison Coin from 2005 is a circulated coin with a denomination of 5 cents. Made of copper and with a fineness of 0.75, this business strike coin features a unique Bison variety. Uncertified and originating from the United States, this coin commemorates the historic Lewis and Clark Expedition. The coin is in wonderful condition, considering it's a circulated coin see pics. And comes with a surprise bonus gift?