A complete set of circulating and proof Susan B. Anthony Dollars includes fifteen coins. If the 1979-P “narrow rim” and “wide rim” coins and the “type 1″ and “type 2″ 1979-S and 1981-S proof coins are included, the size of the set rises to eighteen. The most valuable coins of the series are the low mintage 1981 circulation strikes and the scarce type 2 proof varieties.