The 1992 Silver Proof Set U.S. Mint Original Government Packaging (OGP) with Certificate of Authenticity (COA) includes coins with denominations of 1C, 5C, 10C, 25C, and 50C. These uncirculated coins are composed of silver, copper-nickel, and copper-plated zinc. Minted in San Francisco by the United States Mint, these proof coins are certified by the U.S. Mint and come in their original government packaging. The set is a collectible piece of American numismatic history from 1992.