207 - John R. Arnold / Charles Frodsham - Lever Chronometer

John R. Arnold / Charles Frodsham - Lever Chronometer (*) A very fine, heavy London lever chronometer Movement No. 8107, Case No. 8107, Dimensions 56 mm, circa 1855, Weight 179 g, Origin: England Case: 18K gold, guilloché pattern, fluted case band, case maker “S. T. Crosby,” movement protection cap. Dial: Enamel. Movement: Full-plate movement, chain/fusee, lever escapement, large gold-screw chronometer balance, free-sprung blued balance spring. John Roger Arnold (1769–1843) was the son of the renowned British horologist John Arnold. He began his apprenticeship with A.-L. Breguet in Paris in 1792. The younger Arnold became a member of the Clockmakers’ Company in 1796 and was granted master status in 1817. He entered into a partnership with E.J. Dent in 1830, and the two craftsmen conducted extensive experiments during their collaboration; in particular, they focused on the effects of magnetism on chronometers. Dent left Arnold in 1840, after which Arnold continued working on his own but died only three years later. Charles Frodsham bought the business after Arnold’s death in February 1843, and it flourished until 1858 under the name Arnold and Frodsham. Case: very good. Dial: very good. Movement: very good, capable of running; cleaning recommended.