The coin in question is a 1956 Roosevelt Dime, a notable piece in the series of dime coins that feature President Franklin D. Roosevelt. It was minted in Philadelphia, as indicated by its "P" mint mark. This particular coin is a proof version, which means it was struck using a special process that gives it a high-quality finish, making it more desirable to collectors. The Roosevelt Dime has a diameter of 17.9 mm and weighs 2.5 grams, consistent with the specifications for dimes. Made of silver, this coin represents a denomination of ten cents (10¢). With a total mintage of 669,384 for the proof version in 1956, this dime is part of a relatively limited production run compared to other coins from the same year. The coin features the iconic profile of Roosevelt on the obverse, and the reverse showcases a torch flanked by an olive branch and a bundle of laurel, symbolizing liberty and peace, respectively. As part of the United States currency system, this particular Roosevelt Dime is not just a piece of change but is also a collector's item that holds historical significance and value in numismatic circles.