The product is a lot of 5 U.S. Mint Proof Sets from the years 1990, 1991, 1992, 1993, and 1995. These sets are uncirculated and contain coins with mixed denominations in proof strike type. All the sets are original and were minted in San Francisco by the U.S. Mint. The sets are uncertified, but originate from the United States. This lot offers collectors a variety of proof sets from different years, allowing them to expand their coin collection with coins in pristine condition.