The product is a lot of 10 proof sets from the United States Mint, specifically from the year 1989. Each set contains coins that are uncirculated and struck in proof quality, showcasing the intricate details and craftsmanship of the coins. The sets come in original packaging from the San Francisco Mint, making them a valuable addition to any coin collection or a great gift for numismatists. With a copper composition, these sets are a tangible piece of American history from the late 20th century.