Swiss lever watch in a gold open faced case Circa 1900

Gold lever by Longines
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A Swiss lever in a gold open-faced case, circa 1900. Gilt split three-quarter plate keyless movement with going barrel. Plain cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. Club foot lever escapement. Signed white enamel dial with subsidiary seconds, black Roman numerals, red twelve and red Arabic numerals, and blue steel hands. Plain 18-carat open face case, signed gold cuvette, gilt bow.
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Diameter: 49 mm
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Signed: Longines