The product is a lot of three 1980-1982 United States Proof Sets, each containing coins made of a copper-nickel alloy. These sets are uncirculated and struck as proof at the San Francisco Mint. They are certified by the U.S. Mint and originate from the United States. This lot offers collectors the opportunity to own proof sets from the years 1980, 1981, and 1982, showcasing the craftsmanship and design of coins from this specific time period in American history.