Swiss 18 carat gold open faced lever pocket watch Circa 1910

Gold open faced keyless watch 
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A fine Swiss, 18K gold, keyless pocket watch, circa 1910. The bezel is engraved with a leaf pattern, repeating on the case back rim. Hinged gold cuvette. White enamel dial with Arabic numerals, inner red Arabic numerals for 24 hours, outer minute divisions, subsidiary seconds. Blued steel Breguet hands. Matte gilt movement, 15 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator. Dial, case and movement signed.
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Diameter: 27,5 mm
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Signed: Omega  Swiss