This 2007-S John Adams Presidential $1 Dollar PROOF Coin from US Mint Proof Set is a great addition to any coin collection. The coin is made of brass clad copper and has not been circulated. It features a proof strike type and was minted in San Francisco. The coin is ungraded and comes with certification from the U.S. Mint. The variety of the coin is John Adams and it is a Presidential Dollar. The coin was made in the United States and is a great way to celebrate the presidency of John Adams.