The 2025-S American Innovation $1 Coin Reverse Proof Set of 4 coins is a premium collection of uncirculated coins minted in San Francisco. Each coin is composed of copper and struck in proof condition, making them highly sought after by collectors. This set features the unique design of the American Innovation series, highlighting the groundbreaking achievements of American innovation. The set is certified by the U.S. Mint, adding to its authenticity and value for numismatists and coin enthusiasts alike.