Thin Swiss platinum keyless lever dress watch Circa 1922

Platinum chronometer dress watch by Jules Jürgensen
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A very fine and rare, thin Swiss platinum open-faced keyless lever chronometer dress watch, circa 1922. Rhodium-plated movement, 19 jewels, straight-line lever escapement, cut bimetallic compensation balance, ten adjustments, blued steel Breguet balance spring, micrometer regulator. Satine silver dial with printed black cubic Arabic numerals, outer minute track, sunk guilloché subsidiary seconds, and original blued steel Romaine hands. Solid case, rounded bezel, case back with engraved initials HEG. Dial, case, and movement signed. Accompanied by the original fitted box, certificate, and a 35 cm white gold link chain.
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Diameter: 43 mm
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Thickness: 7 mm
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Signed: Jules Jürgensen Copenhagen Swiss