The 2021 S US Mint Silver 7-Coin Proof Set is a complete set of uncirculated silver coins with a fineness of 0.999. Minted in San Francisco by the U. Mint, each coin is graded as PR70 by NGC. This set includes Gaudioso as part of the design, making it a unique addition to any collection. The set comes with a certificate of certification from the U. Mint, ensuring the authenticity and quality of the coins.