Swiss 18K gold keyless chased and engraved lever watch Circa 1900

Gold open faced pocket watch by Vacheron & Constantin
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A Swiss 18 carat pink gold open faced keyless lever pocket watch with floral decorations, circa 1900. This watch features a handwound mechanical movement, signed Vacheron & Constantin & Cie, Veuve C. Vacheron, with lever escapement. It has a white enamel dial with baton hour markers, an iron track, black Roman numerals for the hours, Arabic five minute divisions, a subsidiary seconds dial, and gold plated spade hands. The case back is decorated with chased floral motifs. The double pink gold numbered cuvette is engraved with: A.MARA 170 Faubourg Saint Honoré, Paris.
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Diameter: 46 mm.
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Weight: 73.7 g
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Signed:Vacheron & Constantin & Cie