Swiss gold open faced keyless Art Deco watch Circa 1925

Gold lever by Ulysse Nardin
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A Swiss 18k gold open faced keyless Art Deco lever dress watch, retailed by W. Türler Berne, circa 1925. Manual winding movement. 15 jewels, straight line lever escapement, cut bimetallic compensation balance,blued steel Breguet balance spring, swan-neck micrometer regulator.
Art Deco case, polished, the bezels and bow decorated with geometric dark blue enamel decoration,chased band
Frosted gilt dial with painted Arabic numerals, outer minute track, subsidiary seconds. Black pierced hands. Case, dial and movement signed.
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Diameter: 44 mm
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Signed: Ulysse Nardin, Locle & Genève