1958D Roosevelt Dime Silver Composition
.Mintage: 136,564,600
.Minted at: Denver
.Designer - Engraver: John R Sinnock
.Metal Composition: 90% Silver - 10% Copper
.Finesse: 0.900
.Diameter: 17.9 mm
.Mass / Weight: 2.5 grams
.Thickness: 1.1 mm
.Variety/Rarity: Denver.Type1 (Silver)