The American Gold Buffalo coin debuted from the United States Mint in 2006. The first-ever 24-karat gold coin from the United States, the American Gold Buffalo revived the imagery from the historic Buffalo Nickel circulation five-cent piece. In 2013, the US Mint marked the centennial of the design with a reverse proof version of the American Gold Buffalo. Right now, 2013-W 1 oz Reverse Proof American Gold Buffalo Coins are available to purchase in near-perfect condition from JM Bullion.