Swiss gold musical cylinder with floral painting Circa 1900

Gold keyless pocket watch
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An 18 carat pink gold, case with lateral sliding bolt for music release, extremely rare movement with musical cylinder, so-called Barillet-type, patent 6776, circa 1900.
Crown winding for gear train and musical movement, very beautiful enamel dial with floral painting, gold hands.
Very beautiful sound, extremely rare. According to our knowledge, this is the only piece with gold case.
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Diameter: 58 mm
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Weight: 142 g
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Signed:  A. Didisheim & Frères   St. Imier
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Minimal hairlines