Swiss chrome metal Art Deco buttonhole lapel watch Circa 1930

Chrome metal keyles lever with red enamel
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A Swiss chrome metal Art Deco buttonhole keyless lapel watch, circa 1930. White enamel dial, Arabic numerals at the quarters, minute track, subsidiary seconds at 6 and blued steel hands. The buttonhole and front are set with a dark red enamel. The movement with a lever escapement. Dial signed, movement signed and numbered.

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Diameter: 30 mm
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Signed: Tavannes Watch Co.  Swiss
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Tavannes Watch Co. was founded in 1891 by watchmaker Henri-Frédéric Sandoz from Le Locle and was named after a town. Sandoz obtained several Swiss patents to improve pocket watches.