Swiss yellow 18K gold chronometer deck watch Circa 1940

Gold open faced lever watch
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A fine Swiss 18 carat yellow gold keyless pocket watch, circa 1940. A polished case with brass bound corners. The interior of the lid is mounted with a plaque with the Rolex logo and listing the Class A achievement. White enamel dial with black painted radial Roman numerals, outer minute track, subsidiary seconds dial and blued steel baton hands. Rhodium plated movement, monometallic compensation balance, flat balance spring, index regulator. Dial and movement signed, case numbered.
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Diameter: 51 mm
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Thickness: 8 mm
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Signed: Rolex  Swiss