Purchase American Gold Buffalo Coins – 24K U.S. Mint Bullion To further add to the rich history of the U.S. Mint, the American Gold Buffalo Coin became the first gold coin in the United States to be minted that ever carried a.9999 fine (24-karat) of gold. The coin is 1 oz gold, minted in fine gold, with the support of the U.S. Government as legal tender, and is trusted the world over... https://www.boldpreciousmetals.com/gold/american-buffalo-gold-coins