The coin in question is a 2015 Presidential Dollar, specifically part of the series honoring U.S. Presidents. Minted in San Francisco, it bears the distinctive "S" mint mark, which indicates its origin. This coin is a proof issue, characterized by its high-quality finish and reflective surface, making it particularly desirable for collectors. Produced from manganese-brass, the coin has a diameter of 26.5 millimeters and weighs 8.07 grams, which is standard for dollar coins in this series. With a total mintage of 1,191,876, this coin offers a balance of relative rarity while still being accessible to collectors. As a one-dollar denomination coin, it represents not only a component of currency but also a piece of American history, linking back to the Presidential Dollar series that celebrates influential leaders in the United States. With its elegant design and unique proof finish, this coin is a noteworthy addition to any collection focused on modern U.S. currency or presidential memorabilia.