This 2001 Clad Proof Set U.S. Mint Original Government Packaging OGP COA includes coins with denominations of 1C, 5C, 10C, 25C, 50C, and $1. The coins are made of different compositions such as Copper-Plated Zinc, Copper-Nickel, and Manganese-Brass. They are uncirculated and have a proof strike type. The set was minted in San Francisco and comes with certification from the U.S. Mint. This collectible set is a great addition to any coin collection.