Swiss 18K rose gold dead centre seconds lever Circa 1870

Rose gold open faced keyless lever with centre seconds
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A fine Swiss 18 carat rose gold open faced keyless lever pocket watch with dead centre seconds and independent stop function, circa 1870. Rhodium-plated, Geneva striping decoration, 18 jewels, wolf’s tooth winding, counterpoised straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator, the centre seconds wheel with extra bridge. Gold hinged cuvette. White enamel dial with Roman numerals, outer minute track and Arabic five-minute numerals, subsidiary seconds, original gold Louis XV hands. Polished case, stop slide for the centre seconds at 8. Case punched BHJ & Co.
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Diameter: 50 mm
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Signed: No name