A Regency 18ct gold open-faced lever pocket watch S. Nickisson, London, 1823 The circular four columnar pillar frosted gilt full-plate single fusee movement with English lever escapement incorporating diamond pallets and jewelled pivots for both the escape wheel and pallet arbors and regulated by sprung three-arm gold monometallic balance, the backplate with faceted diamond endstone and FAST/SLOW regulation to the fine foliate scroll engraved backcock and signed S. NICKISSON, LONDON, No. 4306 to the mainspring barrel pivot plate, with gilt brass dust cover, cream Roman numeral dial with subsidiary seconds and gilt spade hands, the three-piece consular case with oval section suspension ring post and engine-turned decoration to rear cover and bezel, case marked for Sheffield 1823, 5.1cm (2ins) diameter. Simon Nickisson is recorded in Baillie, G.H. Watchmakers & Clockmakers of the World as working in London 1808-40.