The Susan B Anthony Dollar was struck on planchets with an outer layer of copper nickel (75% copper and 25% nickel) and an inner core of pure copper. The coins weigh 8.1 grams and have a diameter of 26.5 mm. All pieces are struck with a reeded edge.
The mintmark, for pieces struck at any Mint, is found on the obverse, in the left field next to Ms. Anthony’s neck. Susan B. Anthony Dollar proof coins were struck at the San Francisco Mint from 1979 to 1981, and at the Philadelphia Mint in 1999. Circulating coins were produced at Philadelphia, Denver, and San Francisco Mints.
Dates: 1979-1981, 1999
Mint Mark: P (Philadelphia), D (Denver), S ( San Francisco)
Composition: 91.67% copper, 8.33% nickel
Weight: 8.10 grams
Diameter: 26.50 mm
Edge: Reeded
Designer: Frank Gasparro