English rose gold half-quarter repeating cylinder watch Circa 1815

Rose gold repeater by John Roger Arnold
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A fine and heavy English 18 carat rose gold open faced half-quarter repeating pocket watch, circa 1815. Full plate movement, chain and fusee, two hammers and two gongs, key wind, a cylinder escapement, temperature compensating balance spring and three-arm gold ring balance. White enamel dial with Roman hours, outer minute divisions, subsidiary seconds at 6 o’clock and spade hands. The plain case with maker’s mark WW. Dial and movement signed and numbered.
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Diameter: 56 mm
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Weight: 172 g
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Signed: Jn. R. Arnold London
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John Roger Arnold was born in 1769 as the son of the famous watchmaker John Arnold. The craft of watchmaking he began in 1783, first apprenticing 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 possibility 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 he died in 1843.