Swiss silver keyless chronometer pocket watch Circa 1890

Chronometer pocket watch with open face by Duval
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Exquisite, keyless silver Swiss chronometer, possibly school watch, circa 1890.
Pivoted detent chronometer movement, wolf’s toothing, screwed gold chatons, Geneva striping, special design of the hairspring. Enamel dial with Roman radial hours, outer minutes track with Arabic five minutes numerals, subsidiary dial for the seconds, and beautiful Fleur-de-Lys steel hands. Engine-turned top quality silver case, à-goutte, glazed movement.
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Diameter: 52 mm
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Weight: 120 g
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Signed: Duval