Mint 1990 American Eagle 1 oz. 999 Silver Proof Coin is a valuable and collectible item that comes with a box and certificate of authenticity. Special mint Proof in San Francisco. This coin features the iconic American Eagle design and is composed of 99.9% silver, making it a high-quality piece for any coin collector or investor. The coin’s proof strike type adds to its aesthetic appeal, while the 1 oz precious metal content ensures its value and desirability among numismatists. With the trusted U. Mint brand behind it, this coin is a sought-after addition to any collection.