Swiss gold open-faced keyless lever dress watch Circa 1920

Gold keyless lever by Ulysse Nardin
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A fine, thin Swiss 14-carat gold open-faced keyless lever dress watch, circa 1920. Retailed by Carl Suchy & Söhne, Wien. Frosted gilt movement, 17 jewels, straight-line lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring, swan-neck micrometric regulator. Gold hinged cuvette. Matte silver dial with Breguet numerals, outer minute track, subsidiary seconds, engine-turned center, and original blued steel spade hands. Polished case, the back engraved with a monogram HB. Dial and cuvette signed by the retailer, movement signed Ulysse Nardin, case numbered. Accompanied by an Ulysse Nadin fitted box.
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Diameter: 50 mm
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Signed: Ulysse Nardin Locle Genève