The 2012-S US Mint SILVER Proof Set includes 14 coins made of 90% silver, featuring a variety of designs and denominations. Each set comes with a Certificate of Authenticity (COA) and original government packaging, adding to its collectible value. Produced by the United States Mint in San Francisco, this set is a rare and sought-after item for coin enthusiasts and collectors looking to add pristine proof sets to their collection.