1 Penny brown-red, Queen Victoria, head type I, alphabet I, plate 96, letters OB, Henry Archer experimental perforation 16, engraved by Perkins, Bacon & Petch, single franking cancelled barred numeral "285" EXETER on cover to London, double-circle "EXETER OC 18 1850" and red LONDON "OC 19 1850" arrival on reverse, two small pin punctures at left, otherwise perfect condition, one of earliest usages of Henry Archer experimental perforation from last quarter 1850, so-called "Devon Distribution", sender J.L. Thomas who sold his firm to Lever Brothers in 1908 (now Unilever), photo certificate Albert Louis BPP (2024) "genuine and in a perfect state of preservation", Mi. 1.400.- (SGNo. 16 Spec. CE2), ex Ake Rietz collection.