Swiss 18k gold open faced eight day going watch Circa 1850

Gold eight day going cylinder pocket watch
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A fine, very rare Swiss 18 carat gold open faced eight day going pocket watch, circa 1850. Frosted gilt movement, bar caliber with two going barrels, 8 jewels, cylinder escapement, gold three armed balance, flat balance spring, index regulator. Hinged gold cuvette with engine turned decoration. White enamel dial with Roman numerals, outer minute track and blued steel Breguet hands. Engine turned case back engraved with flowers, chased flower border and bezel, reeded band.
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Diameter: 47 mm
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Signed: No name