The American Gold Buffalo is another official gold bullion coin of the United States of America. These coins have purity and weight that has been guaranteed by the United States Government. As is the case with most gold sovereign rounds, these tend to cost more. They benefit from not only their gold value, but their collectible value as well. Unlike the other US Mints sovereign coin, the gold American Eagle, this coin is minted with .999 purity gold. If you are unsure where to begin purchasing precious metals, or want the confidence of owning precious metals guaranteed by the USA, this is a great choice.