Early French silver jumping centre seconds deck watch Circa 1810

Silver deck watch by Breguet
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A technical rare and early French silver open faced lever deck watch with jumping centre seconds, circa 1810. Very rare Pouzait escapement, 46 mm balance which rotates every second. White enamel dial with Arabic numerals, date and jumping centre seconds. Plain case, reeded band, maker’s mark CHG. Case numbered, dial and movement signed,
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Diameter: 59 mm
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Weight: 141 g
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Signed: Breguet  à Paris