1957D Roosevelt Dime Silver Composition
.Mintage: 113,354,330
.Minted at: Denver
.Designer/Engraver: John R Sinnock
.Metal Composition: 90% Silver - 10% Copper
.Finesse: .900
.Diameter: 17.9 mm
.Mass/Weight: 2.5 grams
.Thickness: 1.1 mm
.Variety/Rarity: Denver/Type 1 (Silver)