This set includes five United States Mint proof clad sets from 1994, 1995, 1996, 1997, and 1998. Each set contains proof coins with Uncirculated quality and is made of clad composition. The coins were struck in San Francisco and are not graded. The sets are certified by the U.S. Mint and do not have a certification number. This is a great addition to any coin collection, especially for those interested in Proof Sets.