1932-s Washington Quarter 25c Grades Choice AU/BU Slider+. One of the Keys to the series. According to David Hall, from PCGS The 1932-s is the 2nd rarest of the Washington quarters. There are only two Washington quarters with mintages of under one million coins. The 1932-s has the lowest original mintage of 408,000. This coin is one of the most in-demand key dates of the 20th century. This is a date that has been sought after in all grades since the 1950's. Scarce in all grades.