A GEORGE IV EBONISED MANTEL CLOCK BY WILLIAM JOHNSON, LONDON A small scale early 19th century mantel timepiece, the ebonised ormolu mounted case with an arched top and caddy top surmounted by a carrying handle, the sides inlaid with panels inlaid with brass lines and stars, standing on raised adjustable turned feet, the 3- inch one piece engraved silvered chapter dial signed ‘W. Johnson Strand London’ with Roman chapters and pierced steel hands, the single fusee movement with arched plates, four pillars and adjustable pendulum bob with locking nut, the back plate signed 'Johnson/Strand, London'. English, circa 1820 Height: 8 in; 20.5 cm Width: 5 in; 12.5 cm Depth: 4 ¾ in; 12 cm William Johnson and Samuel Grimaldi are listed in 'Watchmakers and Clockmakers of the World' by G H Baillie as watch and clockmakers in 1809-25. William Johnson is recorded later working at 50 Strand, London from 1825 to 1842, indicating that his partnership with Grimaldi was dissolved by 1825. Literature: Richard Barder, ‘The Georgian Bracket Clock 1714 – 1830’, London, 1993, p. 194, plate V1/22; a similar example.