The 1945 S Washington Silver Quarter is a minted coin with a denomination of 25 cents, featuring a composition of 90% silver. It is a business strike coin originating from the United States, specifically from the San Francisco mint. This particular coin is part of the series of Washington quarters, showcasing a portrait of George Washington on one side and various designs on the reverse. A highly sought-after collectible for coin enthusiasts, this quarter is a valuable piece of American numismatic history.