The coin in question is a 1923 Standing Liberty Quarter, minted in San Francisco (Mint Mark: 'S'). It falls under the category of U.S. coins with a denomination of 25 cents, also known as a quarter. Composed primarily of silver, this quarter has a total weight of 6.25 grams and a diameter of 24.3 millimeters. The Standing Liberty Quarter series is notable for its unique designs that celebrate American liberty and resilience. With a mintage of only 1,360,000 units, the 1923 San Francisco Standing Liberty Quarter is relatively rare compared to other years in the series, which adds to its collectors' value and appeal. This particular coin is a mint strike, which indicates it was produced with the utmost quality at the San Francisco Mint, known for its precision in crafting currency. The 1923 Standing Liberty Quarter is not only a piece of currency but a historical artifact that reflects American coinage during the early 20th century. As a collectible item, its condition and rarity contribute significantly to its valuation among numismatists and collectors alike.