Swiss silver marine chronometer lever watch Circa 1918

Silver open faced lever deck watch
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Rare Ulysse Nardin observation chronometer/ marine chronometer in excellent condition, with Ulysse Nardin brochure, circa 1918. An original silver case with gold hinges, case number 312875, movement number 19837, very fine chronometer with lever escapement and Guillaume balance, signed, numbered, excellent quality, signed original enamel dial in perfect condition, blued steel hands, in very beautiful and nearly like new condition.
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Diameter: 59 mm
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Weight: 178 g
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Signed:  Ulysse Nardin  Geneve