The product is a 1981 United States Proof Set with all six coins in uncirculated condition. The set includes $1, 50¢, 25¢, 10¢, 5¢, 1¢ coins made of copper with a fineness of 0.917 and clear S mintmarks from San Francisco. The set is certified by the U.S. Mint and has a KM number of 0.