This coin set features four uncirculated presidential $1 coins in a proof strike type. The coins were minted by the US Mint in San Francisco between 2007 and 2016, as well as in 2020. The set comes with the original box and a Certificate of Authenticity (COA) from the US Mint. The coins feature the images of John Adams, George Washington, Thomas Jefferson, and James Madison, and have a denomination of $1. The coins are made of Manganese-Brass and are ungraded. This is a beautiful set for any coin collector or history buff.