1966 Kennedy Half Dollar 40% Silver Composition
.Mintage: 108,984,932
.Minted at: Philadelphia (No Mint Mark)
.Designer - Engraver: Gilroy Roberts
.Metal Composition: 40% Silver - 60% Copper
.Finesse: 0.400
.Diameter: 30.6 mm
.Mass / Weight: 11.5 grams
.Thickness: 2.15 mm
.Variety/Rarity: Philadelphia/Type2 (40% Silver)