This 2016-S US Mint Silver Proof Set with COA & Box features 13 coins with a mix of denominations, all composed of silver with a fineness of 0.9. The set was minted in San Francisco and strikes in proof quality. The coins are ungraded and come with U.S. Mint certification, making them a great addition to any coin enthusiast's collection. The set is a great choice for those looking to add to their collection, with a variety of coins from the United States.