Fine gold and enamel Swiss jump hour watch Circa 1840

Gold and enamel jump hour watch
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A gold and enamel Swiss jump hour watch, made for the Turkish market, circa 1840. Cylinder movement, gold cuvette enhanced by flowering vines in gold and opaque powder blue enamel, against a guilloché ground with translucent peach enamel.
White enamel dial with Turkish numerals, aperture for jumping hours, eccentric chapter ring, subsidiary seconds.
Case with apertures displaying hours and seconds, each framed in lobed cartouches depicting bursts of spring flowers, the background with opaque blue enamel and flowering vines, the reverse with polychrome enamel painting of ships within a seascape in scalloped frame. Case and cuvette numbered.
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Diameter: 48 mm
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Signed: No Name