Swiss 18K yellow gold and onyx lever pocket watch Circa 1940

Gold dress watch with 13 cm watch fob 
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A Swiss 18K gold and onyx dress watch with a yellow gold and onyx inlay 13 cm watch fob, circa 1940. A solid case, onyx, yellow gold bow and bezels, yellow gold baton minute/hour markers. Satine champagne dial with Blued steel cathedral hands.
A rhodium-plated movement, 15 jewels, straight-line lever escapement, bimetallic compensation balance, blued steel flat balance spring, index regulator.
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Thickness: 10 mm
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Diameter: 40 mm
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Signed: Anonymous  Swiss