Swiss gold pendant watch with diamonds and blue enamel Circa 1890

Gold open faced lever pocket watch
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A very fine and rare Swiss, 18K yellow gold pendant watch with blue enamel and diamonds, circa 1890. A solid case, hinged bezel, back and cuvette, bezel decorated with engraved floral pattern on an enamel blue background with applied diamonds, back decorated with blue enamel and floral pattern centred by a diamond-set floral motif.  White enamel dial with blue Arabic numerals, outer minute track with blue Arabic 5-minute markers. Gold Louis XV hands. A nickel-silver movement, 18 jewels, wolf’s tooth winding, straight-line moustache lever escapement, cut bimetallic compensation balance, blued steel flat balance spring, index regulator. Dial, case and movement signed. 
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Diameter: 29 mm
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Signed: Henri Capt  Genève
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The minute hand on the dial is missing.