Swiss lever chronograph with 30 minute register Circa 1935

Stainless steel chronograph by Ulysse Nardin
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A fine Swiss stainless steel open faced keyless lever chronograph pocket watch with 30 minute register, circa 1935. Rhodium plated movement, Geneva Striping decoration, 21 jewels, straight-line lever escapement, mono-metallic balance with selfcompensating blued steel Breguet balance spring, spring loaded micrometric regulator. Snap-on steel cuvette. Matte silver dial with black painted Breguet numerals, outer minute and seconds divisions with five minute Arabic numerals, subsidiary seconds, 30 minute register below 12 o’clock and original black steel spade hands. Polished case. Dial, case and movement signed, case numbered.
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Diameter: 51 mm
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Signed: Ulysse Nardin Locle Suisse