The product is a lot of three sets of United States Mint uncirculated proof sets from the years 1984-1989 and 1996. Each set contains coins composed of copper and struck as proof in the San Francisco Mint. The sets are certified by the U.S. Mint. This collection offers a glimpse into the coinage of the United States during the specified periods, showcasing the craftsmanship and design of the coins produced by the mint.