1964D Kennedy Half Dollar 90% Silver Composition
.Mintage: 156,205,446
.Minted at: Denver
.Designer - Engraver: Gilroy Roberts
.Metal Composition: 90% Silver - 10% Copper
.Finesse: 0.900
.Diameter: 30.6 mm
.Mass / Weight: 12.5 grams
.Thickness: 2.15 mm
.Variety/Rarity: Denver/Type1 (90% Silver)