Swiss verge in a decorative three colour gold case Circa 1780

Three colour gold Swiss verge pocket watch
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A Swiss verge in a decorative three colour gold case, circa 1780. Full plate gilt fusee movement, pierced and engraved bridge cock with steel coqueret, plain three-arm gilt balance with blue steel spiral hairspring. Silver regulator dial with blue steel indicator. Pentagonal baluster pillars. Winding through the white enamel dial, Roman and Arabic numerals, fine decorative pierced gold hands. Engraved gold bezels, the case back decorated with a scene in three colour gold.
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Diameter: 44 mm
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Signed: Romilly a Paris