Swiss 18K yellow and white gold ball watch with chain Circa 1900

Yellow gold, white gold, diamond and enamel ball watch 
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A fine Swiss yellow and white 18K gold, diamond and enamel lady’s ball watch with bezel winding on a chain, circa 1900. Accompanied by original fitted Paul Ditisheim box. A ball-form watch, pink enamel over guilloche with painted foliate decoration and diamond-set band, bezel winding and hand-setting. White enamel dial with black Arabic numerals and red 12, outer gilt dot minute divisions and Epee hands. Matte gilt movement, cylinder escapement, cut bimetallic compensation balance, blued steel flat balance spring, index regulator. Case signed, movement and case are numbered.
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Diameter: 20 mm
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Signed: Paul Ditisheim  Swiss
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The case with some lacking elements.