This coin is a 1940 Washington Quarter, specifically minted at the San Francisco Mint (designated with an 'S' mint mark). As part of the Washington Quarters series, this coin features a striking design that pays homage to the first President of the United States, George Washington. In terms of specifications, the quarter has a denomination of 25 cents and is composed primarily of silver, weighing 6.25 grams and measuring 24.3 millimeters in diameter. The production type is a mint strike, indicating that it was produced with high-quality standards for circulation. With a total mintage of 8,244,000, this coin is relatively available in the market, although individual grades can significantly influence its value. The 1940 San Francisco Quarter is not only a representation of American currency but also an intriguing piece for collectors due to its historical significance, craftsmanship, and the natural allure of its silver composition. Overall, this coin serves as a prominent example of early 20th-century American numismatics and remains a popular choice among both collectors and enthusiasts.