The 1983-S US Mint Proof Set includes 5 coins with denominations of 1C, 5C, 10C, 25C, and 50C. These coins are uncirculated and made of clad composition, with a fineness of 0.75. Produced by the United States Mint in San Francisco, this set comes in its original government packaging and is certified by the U.S. Mint. The set features coins struck in proof quality, making it a desirable collector's item for those interested in US coins from the 1980s.