This 2012-S US Mint Silver Proof Set is a must-have for coin collectors. The coins are made of 0.9 fineness silver and struck in proof quality at the San Francisco Mint. The set comes with the original government packaging and a Certificate of Authenticity from the US Mint. This key date set is a great addition to any coin collection, with coins that are ungraded and certified by the US Mint. Don't miss out on the chance to own this valuable and unique set.