Decorative three colour gold turquoise set watch Circa 1830

A Swiss lever in a decorative 18 carat three colour gold open faced case set with turquoise, circa 1830. Keywind gilt Lepine calibre bar movement with suspended going barrel, plain cock with blue steel regulator, plain three armed gilt balance with blue steel spiral hairspring, ratchet tooth lever escapement. Signed engine turned gold dial with Roman numerals and blue steel Breguet hands. Attractive case with applied three colour gold decoration and set with turquoise on the back and bezels. Wound and set through the signed and numbered gold cuvette.
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Diameter: 42 mm
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Signed: No 6903 Aiguilles Scheidler & Bergeon A GENEVE