Gold split-seconds chronograph lever watch Circa 1874

Rare gold split-seconds chronograph keyless lever watch
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A rare 18k gold English split-seconds chronograph keyless lever watch with enamel dial, circa 1874, jewelled gilt lever movement, bimetallic compensation balance, gold cuvette.
White enamel 1/5 second dial with Roman numerals, two subsidiary dials for 60-minute register and subsidiary seconds.
Polished 18k gold case with monogram, split-seconds chronograph mechanism operated by one oval button in the band and by pushing the pendant.
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Diameter: 51 mm
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Weight: 112 g
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Signed: Mappin
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Dent at the band.
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Reference 023000