This is the second year in which the Mint struck Proof Washington Quarters. This date has the second lowest mintage in the entire Proof Washington Quarter series from 1932 to Date. Most 1937 Proof Washington Quarters appear to be in PR65 condition. Examples in PR64 and PR66 seem to be the second and third most common grades found for this issue. In PR67 they are scarce with about a couple hundred examples known. In PR68 they are very scarce with less than a handful of examples known in this condition and none being graded higher.