Swiss 18 carat yellow gold keyless pocket watch Circa 1930

Gold open faced with two-tone dial
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A fine Swiss, 18K yellow gold, keyless pocket watch, circa 1930. A polished case stepped bezel. Two-tone dial, champagne with black painted dart numerals, outer minute track, subsidiary seconds dial. Blued steel épée hands. Rhodium-plated movement, 17 jewels, straight-line lever escapement, monometallic compensation balance, flat balance spring, index regulator. Case, dial and movement signed.
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Thickness: 8 mm
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Diameter: 42 mm
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Signed: Rolex  Swiss