George III (1760-1820), Specimen Sixpence, 1787, by L. Pingo, in silver, laureate and armoured bust right, rev. cruciform shields with semée of hearts, crowns in angles, border of pellets both sides, edge plain, 4.16g/12h (Eimer 86; ESC 1640; Selig 1228). Good extremely fine, reverse better, dark tone £300-400

One of the coins intended for the sets prepared by Lewis Pingo for the Bank of England and other interested officials in September 1787 (Manville, BNJ 2004, pp.90-1)