Fine and rare silver deck and pocket lever chronometer Circa 1930’s

Large silver Swiss deck and pocket lever chronometer
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A fine and rare, large, silver keyless deck and pocket lever chronometer with Guillaume balance and 48-hour power reserve indication. Made by Ulysse Nardin, Locle & Genève in the 1930’s.
Four body, massive, bassine and polished case with hinged back and bezel. Hinged silver cuvette.
White enamel with radial Roman numerals, outer minute track, large subsidiary seconds and up-and-down scale. Blued steel spade hands.
Frosted and gilt movement with 17 jewels, straight-line lever escapement, Guillaume balance with three adjustments, blued steel Breguet balance spring with over coil and an index regulator.
Dial and movement signed.
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Diameter: 64 mm
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Signed: Ulysse Nardin, Locle & Genève