Danish platinum Art Deco hectagonal dress watch Circa 1923

Platinum keyless lever dress watch
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Very fine, thin Danish, platinum Art Deco hectagonal keyless dress watch, circa 1923.
A solid, brushed case, hinged caseback. Matte silver dial with painted Arabic numerals, outer minute track and blued steel Breguet hands. Rhodium-plated movement, 18 jewels, straight-line lever escapement, wolf’s tooth winding, cut bimetallic compensation balance, blued steel flat balance spring, index regulator. Dial, case and movement signed.
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Diameter: 43 mm
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Thickness: 6 mm
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Signed: Urban Jurgensen & Sonner  Copenhagen