1987 American Silver Eagle in BU+ proof-like condition, housed in a velvet box. Coin weighs 31.1 grams, 1-Troy Ounce. Fineness = 99.9% silver. This second-year coin, with a key date, contains 1 oz of. 999 fine silver and is ungraded. Minted by the U. Mint, this highly sought-after piece is a valuable addition to any coin collection or investment portfolio. Coin is in mint like state, and has no signs of cleaning.