Swiss gold brooch watch made for the Chinese market Circa 1890

Gold, enamel brooch in the form of a butterfly
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A fine and elegant Swiss, 18K gold, enamel, ruby and rose-cut diamond-set lady’s keyless brooch in the form of a butterfly with concealed watch, circa 1890. Made for the Chinese market. In the form of a butterfly, the wings overlaid with translucent green, blue and yellow enamel and set with rubies and rose-cut diamonds, the central body hinged to reveal the dial, the winding crown formed from the butterfly’s antenna.
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White enamel dial with radial blue Arabic numerals, red 12, outer gold dot minute indexes. Gold spade hands. A frosted gilt movement, bar calibre, 15 jewels, cylinder escapement, three-arm balance, blued steel flat balance spring, and an index regulator. Property of an Israeli Collector.
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Dimensions: 52 x 47 mm
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Signed: Tardy & Fils  Genève