Swiss emerald set crocodile brooch with watch Circa 1890

Emerald set crocodile brooch watch made for the Chinese market
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An unusual Swiss emerald set crocodile brooch with inset watch made for the Chinese market, circa 1890, cylinder movement.
White enamel dial, Arabic numerals.
Ball case with translucent red enamel on engine-turned ground, the ball held within the mouth of the twisting crocodile, highlighted with a row of graduated emeralds, unsigned.
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Diameter (length) 42 mm  Width 33 mm
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Signed: No Name
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For a similar example see Chapuis, A., La Montre Chinoise.