Swiss gold open faced keyless lever pocket watch Circa 1920

Gold keyless lever by Touchon
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A Swiss 18 carat gold open faced keyless lever pocket watch, circa 1920. Nickel finished Extra lever movement, 19 jewels, bimetallic compensation balance. Gold cuvette. Silvered matte dial with applied Arabic numerals, outer dot minute track, engine turned subsidiary seconds dial and gilt moon style hands. Polished case, engraved bezel and back rim, coin edge band. Case, dial and movement signed, case, cuvette and movement numbered.
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Diameter: 43 mm
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Signed: Touchon & Co Swiss