1978 Kennedy Half Dollar Clad Composition
.Mintage: 14,350,000
.Minted at: Philadelphia (No Mint Mark)
.Designer - Engraver: Gilroy Roberts
.Metal Composition: 91.67% Copper - 8.33% Nickel (Cupronickel)
.Diameter: 30.61 mm
.Mass / Weight: 11.34 grams
.Thickness: 2.15 mm
.Variety/Rarity: Philadelphia/Type3 (Copper-Nickel Clad)