Susan B. Anthony Composition and Specifications

Susan B. Anthony Dollar

The Susan B. Anthony Dollar was struck on planchets with an outer layer of 75% copper and 25% nickel bonded to an inner core of pure copper, yielding a net composition of 91.67% copper and 8.33% nickel. The coins weigh 8.1 grams and have a diameter of 26.5 mm. All pieces are struck with a reeded edge.

The diameter of the coins is situated between that of the quarter dollar (24.3 mm) and half dollar (30.6 mm). Confusion with these denominations is often cited as the reason the coins did not achieve widespread circulation.

During the course of the series, coins were struck at the Philadelphia, Denver, and San Francisco Mint facilities. Mint marks for all issues of the series appear on the obverse, in the left field behind Ms. Anthony’s neck.

Coin Specifications

  • 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