Lot No. 42* (92nd Auction)
John Roger Arnold, London, Inv. et Fecit, Movement No. 279, Diameter 105 mm, circa 1806

A rare, small ship's chronometer
Case: mahogany, convex glazed. Dial: silvered, signed, numbered, radial Roman numerals, inlaid small email seconds, blued spade hands. Movm.: brass movement, signed, numbered, moulded pillars, chain/fusee, Arnold's spring detent escapement, bimetallic Z balance with 6 screws and 2 nuts, blued helical balance spring with both sides passing terminal curves, chatoned diamond endstone on balance.

John Roger Arnold
He was born in 1769 as the son of the watchmaker John Arnold. His work in watchmaking began in 1783, when he first apprenticed with his father and from 1792 on with Abraham-Louis Breguet. He was admitted to the Freedom of the Clockmakers' Company in 1796 and became a Master in 1817. After the death of his father, John Roger continued the company on his own until 1830. In this year he moved to Strand 48 and started a 10-year partnership with E.J. Dent; business went well during this time and the partners had the possiblitiy to research and experiment, in particular they investigated the influence of magnetism on chronometers. When the partnership ended in 1840, Arnold continued his work until his death in 1843.
Estimate  8,500 - 12,000 €
This is a lot of a former auction!

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