The 2011 Uncirculated Coin Set by the U.S. Mint includes coins of various denominations such as 1 cent, 5 cents, 10 cents, 25 cents, 50 cents, and $1. These coins are composed of copper-plated zinc, copper-nickel, and manganese-brass, and are uncirculated with a business strike type. The set comes with a certificate of authenticity from the U.S. Mint and is packaged in government packaging, making it a valuable addition to any coin collection.