Gold Swiss quarter repeating verge pocket watch Circa 1820

Gold  Swiss quarter repeating verge
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A Swiss quarter repeating verge in a gold open faced case, circa 1820. Full plate gilt fusee movement. Finely pierced and engraved bridge cock with garnet endstone, plain three arm gilt balance with blue steel spiral hairspring. Silver regulator dial with indicator. Push pendant quarter minute repeating on two steel gongs. Winding through the back.
Roman numerals, blue steel Breguet hands. Engine turned 18 carat open faced case with ribbed middle, sprung gilt metal cuvette.
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Diameter: 54 mm
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Weight: 106 g
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Signed: Probably Swiss
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Reference 0015000