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Auktionen Dr. Crott 91st Auction

539 John Roger Arnold, London, Inv.t et Fecit, Movement No. 2167, 59 mm, 215 g, circa 1818  A heavy and rare pocket chronometer with spring detent escapement according to John Arnold Case: silver, polished, tiered, case maker punch mark “TH” (Thomas Hardy). Dial: enamel, radial Roman hours, auxiliary seconds, numbered, signed, gold spade hands. Movm.: full plate movement, frosted, gilt, chain/ fusee, round pillars, keywind, signed, spring detent escapement according to John Arnold, chronometer balance with 4 adjusting screw nuts and 6 screws, blued helical freesprung balance spring with both sides passing, chatoned diamond endstone on balance. John Roger Arnold (1769-1843) John Roger Arnold was the son of 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 Clockmaker’s Company in 1796 and was a Master in 1817. He took up a partnership with E.J. Dent in 1830 and the two craftsmen experimented heavily during their work together; in particular they concentrated on the effects of magnetism on chronometers. Dent left Arnold in 1840, whereupon 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. John Roger Arnold, London, Inv.t et Fecit 英國 — 厚實,罕見的懷錶時 計,附John Arnold設計的彈簧振盪擒縱 40475  C: 2 D: 2 M: 2, 41  5.500 - 7.500 EUR 6.100 - 8.300 USD 49.500 - 67.500 HKD

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