1991.W American Silver Eagle Bullion Coin: (No Mint Mark) Type1 - Reverse of 1986
.Mintage: 4,172,000
.Minted at: West Point
.Designer/Engraver: Adolph A Weinman
.Metal Composition: 99.93% Silver - 0.07% Copper
.Finesse: .999
.Diameter: 40.6 mm
.Mass/Weight: 31.101 grams
.Thickness: 2.98 mm
.Variety/Rarity: West Point/Type1, Reverse of 1986