Swiss 18K gold split seconds chronograph watch Circa 1890

Gold split seconds chronograph
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A Swiss yellow gold open faced keyless split seconds chronograph watch with vertical register, circa 1890. Manual winding lever movement, 30 jewels.
White enamel dial, Breguet numerals, outer minute track with 1/5 seconds divisions, subsidiary dials for constant seconds and 30 minute register, blued steel hands, 18k yellow gold case and cuvette, case, dial and movement signed and numbered.
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Diameter: 47 mm
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Signed: Jules Jürgensen Copenhagen