The product is a collection of 10 United States Mint proof sets from the years 1977-1986, with the notable exception that the set from 1980 does not come with its original box. These sets consist of uncirculated  coins struck in proof condition and certified by the U.S. Mint. Each set likely includes a variety of coins from the respective years, making it a valuable addition to any coin collection focusing on US coins from this period.