Swiss 18K gold hunting cased keyless pocket watch Circa 1900

Gold full hunter lever by Ulysse Nardin
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Fine and very rare, 18K yellow gold, manual-winding, Swiss minute repeating pocket watch, circa 1900.
Frosted gilt movement, 17 jewels, straight-line lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring, index regulator. Enamel dial with Roman radial hours, outer minutes, subsidiary dial for the seconds, and blued spade hands. Plain polished 18-carat gold case. Gold-hinged engraved cuvette—signature on the case, dial and movement.
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Diameter: 57 mm
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Weight: 140 g
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Signed: Ulysse Nardin