This 1979 D Susan B. Anthony Dollar is a rare find for collectors. This particular coin has an interesting variety of Obverse and Reverse Missing Clad Layers, giving it a unique look. The coin is supposed to weigh 8.1 grams, but this coin weighs 7.8 grams, accounting for the missing layer of metal.
 
It's composition is supposed to be 75% Copper, 25% Nickel over a pure Copper center. However, this coin is missing most of the nickel layer while turning it black in spots and some of the copper has oxidized with scattered spots of green, giving it a unique appearance. 
 
The coin features the image of Susan B. Anthony on the obverse and was minted in Denver. It has a denomination of $1 and is a business strike type. This coin is a great addition to any collection and is sure to impress.