This coin is a 1985 proof Roosevelt Dime, minted in San Francisco, USA. It features a denomination of 10 cents and is part of the Roosevelt Dimes series, which honors President Franklin D. Roosevelt. The coin has a total mintage of 3,362,821, making it a relatively collectible piece. Characterized by its copper-nickel clad composition, the dime measures 17.9 mm in diameter and weighs 2.27 grams. The proof finish gives it a brilliant and mirror-like surface, distinguishing it from standard circulation coins. This particular coin bears the 'S' mint mark, indicating its origin from the San Francisco Mint. As a piece of numismatic interest, this 1985 proof Roosevelt Dime is an excellent addition for collectors looking to enhance their collections with U.S. coins, especially those that celebrate American history.