Swiss 18k yellow gold keyless pocket watch Circa 1928

Gold lever with engraved coat of arms
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A fine Swiss, keyless, 18K yellow gold pocket watch, circa 1928. A polished case, dedicated inside case back, outside case back engraved with a coat of arms. Matte yellow gold dial with painted black Arabic numerals, outer minute track, subsidiary dial for the seconds. Black Fleur de Lys hands. A rhodium-plated movement, straight-line lever escapement, cut bimetallic balance, blued self-compensating Breguet balance spring, index regulator. Dial, case and movement signed.
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Diameter: 45 mm
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Signed: Ulysse Nardin  Le Locle & Genève