William IV, proof Sixpence, 1831, by Wyon, bare head right, rev. inverted, crowned mark of value within wreath, edge plain (ESC 1672; Davies 360), dark attractive tone, practically as struck
William IV, proof Sixpence, 1831, by Wyon, bare head right, rev. inverted, crowned mark of value within wreath, edge plain (ESC 1672; Davies 360), dark attractive tone, practically as struck

Details
William IV, proof Sixpence, 1831, by Wyon, bare head right, rev. inverted, crowned mark of value within wreath, edge plain (ESC 1672; Davies 360), dark attractive tone, practically as struck