The 2021 US Mint Silver Proof Set includes 7 coins made of 0.999 fine silver, struck in proof quality at the San Francisco Mint. This set comes in its original box with a Certificate of Authenticity from the U.S. Mint, making it a valuable addition to any coin collector's portfolio. The set features a variety of coins from the United States, showcasing the craftsmanship and artistry of American minting.