Swiss oval white gold, diamond and sapphire ring watch Circa 1930

Gold Art Deco lever ring watch
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A fine and unusual Swiss, 18K oval white gold, diamond and sapphire Art Deco ring watch, circa 1930. Engraved foliage bezel and shoulders, the case band with engraved foliage, hinged case back. Matte silver dial with black painted Arabic numerals, concentric minute track. Black cathedral hands. A rhodium-plated movement, 16 jewels, straight-line lever escapement, cut bimetallic compensation balance, two adjustments, blued steel flat balance spring, index regulator.
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Thickness: 6 mm.
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Dimensions: 18 x 12 mm
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Signed: No Name