This 2023 S United States Mint silver proof set includes ten proof coins, each with its own original government packaging (OGP) and certificate of authenticity (COA). The set features a mix of denominations, including coins with a composition of silver, and a fineness of 0.999. The coins are struck in proof quality and are uncirculated. The certification is provided by the U. Mint, and the set was minted in San Francisco, United States. The set is ungraded and does not carry a certification number. The KM number is not applicable, and there is no California Prop 65 warning. This is a great addition to any coin collection.