The 2007 United States Mint Presidential $1 Coin Proof Set is a numismatic product released by the United States Mint in 2007. The set includes four proof coins, each featuring a different U.S. president, including: George Washington John Adams Thomas Jefferson James Madison The coins are made of a copper core with a manganese-brass outer layer and have a proof finish, which gives them a mirror-like appearance. The set also includes a certificate of authenticity and comes in a protective plastic case. The Presidential $1 Coin Program was launched by the United States Mint in 2007 to honor the country’s presidents by featuring their images on circulating coins. The program ran from 2007 to 2016 and included 39 presidents, with each president featured on a coin in the order in which they served. The coins were released into circulation and also issued in a variety of collectible products, including proof sets like this one.