Banque de France, 20 francs, 5 December 1940, prefix G.2080 831, blue and multicoloured, allegorical figures representing Work and Science at right, signatures of Favre-Gilly and Rousseau, reverse multicoloured, chemist at left (Pick 92b, Fayette 12.10), in PMG holder 67 EPQ Superb Gem Unc. Top grade on PMG Population Report, scarce in this exceptional grade