Swiss gold and enamel stirrup-shaped smoking watch Circa 1928

Gold Art Deco watch by Omega
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A rare Swiss stirrup-shaped 18K yellow gold and enamel Art Deco keyless smoking watch, circa 1928. A rounded bezel with a champlevé enamel inlay of dark blue flowers and green leaves on the top and surrounded at each side by a chased gold flower and with an inlaid black enamel line at the case sides, back decorated with a textured checkerboard pattern, band and bow decorated to match, with an extended rectangular en suite insert. Gilt bow with black enamel inlay. Two-tone silvered dial with painted black Greek numerals, outer minute track, subsidiary seconds and blued steel cathedral hands. A rhodium-plated movement, 16 jewels, straight-line lever escapement, monometallic balance, cut bimetallic compensation, blued steel Breguet balance spring. Dial, case and movement signed. This watch is sold with a box and certificate of authenticity.
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Thickness: 7.8 mm
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Dimension: 45 x 41.8 mm
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Signed: Omega  Swiss
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The case is slightly rusted.
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The Usine de Genève was Omega’s precision workshop based in Geneva. Many of the firm’s most precise movements were made there. This watch is illustrated in Omegamania, by Marco Richon, Chap. 10, p. 694.