Swiss 18K gold and green champlevé enamel dress watch Circa 1930

Gold keyless lever by Zenith
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A very fine and rare Swiss, 18K gold and green champlevé enamel, keyless dress watch, circa 1930. A polished case, the back decorated with green champlevé enamel and gold in the form of a stylized flower, rectangular bow. Two-tone silver dial with polished Paris numerals, outer engraved minute dots, subsidiary seconds, brushed centre. Cathedrale hands. A matte gilt dial, 17 jewels, straight-line lever escapement, cut bimetallic balance, blued steel Breguet balance spring, index regulator. Dial and movement signed. 
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Diameter: 45,5 mm
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Signed: Zenith Swiss