Buy Gold Coins carry both the American Eagle and the American Buffalo gold coins. The American Eagle gold coin is 999 fine gold bullion, and comes in 1 Ounce, 1/2 Ounce, 1/4 Ounce and 1/10 Ounce sizes. The coin is available in 2016 and backyear versions. The American Buffalo is less frequently traded, however the coin is purer at 9999 fine gold bullion. The American Buffalo is only available in 1 Ounce size, and both 2016 and backyear coins are available at Buy Gold Coins.