The 2011 Clad Proof Set U.S. Mint Original Government Packaging OGP COA includes a collection of coins with denominations of 1C, 5C, 10C, 25C, 50C, and $1. These coins are made of different compositions such as Copper-Plated Zinc, Copper-Nickel, and Manganese-Brass. The strike type of these coins is proof, and they are uncirculated. These coins are part of the Proof Sets category under Coins & Paper Money, Coins: US, and are certified by the U.S. Mint. The coins are denoted by the Mint Location of San Francisco and are not modified.
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