English pair cased silver pocket chronometer watch Circa 1803

Open faced pocket watch with spring detent escapement
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An English pair cased pocket chronometer with spring detent escapement according to John Arnold, circa 1803.
Silver case with case maker’s punch mark “TG”. Off white enamel dial -signed “315 Barraud“- with Roman numerals, a subsidiary dial for constant seconds and decorative hands. The movement -signed “Barraud, Cornhill, London“- is a full plate movement with a chain/fusee, a Z-balance with 4 screws and 2 round weights according to John Arnold and a freesprung blued helical balance spring.
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Diameter: 50 mm
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Weight: 87 g
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Signed: Barraud, Cornhill, London
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Paul Philipp Barraud (1750-1820) was an English chronometer maker in London. His parents were Francis Gabriel Barraud and Magadalen Benine née Crespin, who was the daughter of a renowned Huguenot silversmith. In 1796 Barraud became a member of the Clockmakers’ Company of London and a master in 1810/11. He formed a partnership with George Jamieson and William Howells; of Barraud’s 7 children, his sons Frederick Joseph, John and James followed him into the business. From 1796 until 1820 they created more than 1,000 chronometers together.