The Roosevelt Dime, designed by John R. Sinnock, began mintage in 1946 and continues to be minted today. This set of twenty Roosevelt Dimes was  struck in 1957 at the Philadelphia Mint and graded in Proof 68 condition. Composed of 90% pure silver, these stunning coins honor America's 32nd President Franklin Delano Roosevelt. Out of all 1957-P Roosevelt Dimes struck, significantly less than 1% have been graded in PF68 condition. With such a low Proof 68 population, these 1957-P Roosevelt Dimes  are tremendous Condition Rarities.