This 2002 United States Mint Set with Denver and Philadelphia lenses comes with a Certificate of Authenticity from the U.S. Mint. The set includes uncirculated coins with a composition of CLAD, struck in Denver and Philadelphia. The coins have not been graded or certified, but are in excellent condition. The set is a must-have for any collector of U.S. coins and paper money, and is a great addition to any collection.