The weight and purity of American Silver Eagle coins are guaranteed by the US government. Each coin contains at least one troy ounce (31.1g) of 99.9% pure silver, according to the United States Mint.
Investors can buy 99.9% pure silver bars ranging in weight from 1 ounce to 100 ounces or bullion coins such as the 1-ounce American Eagles the U.S. Mint produces. Investors can also buy so-called ...