United States Mint Silver Proof Set includes 10 silver proof coins with a fineness of some coins at 99.9%. Each coin is struck with a proof finish at the San Francisco Mint and comes with a Certificate of Authenticity from the U. The set is a valuable addition to any coin collection, especially for collectors looking for high-quality, uncirculated coins with a silver composition. The set also includes original government packaging, and a Certificate of Authenticity, adding to its collectible appeal. Please view all the photographs carefully and read the entire description to appreciate the beauty and value of this. 2025 S United States Mint silver proof set. The coins that you see in the photographs are the exact coins you will receive.