Swiss 18k gold and pearl-set verge pendant watch Circa 1830

Gold open faced with varicoloured gold dial
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A very fine and rare Swiss, 18K gold and pearl-set pendant watch, circa 1830. Hinged sprung bezel set with pearls and seed pearls, the backset with graduated pearls. Gold dial with applied radial Roman numerals, outer minute markers, varicoloured gold foliate border, engine-turned centre. Blued steel lozenge hands. A frosted gilt, full plate movement with cylindrical pillars, fusee and chain, verge escapement, brass three-arm balance, pierced and chased continental balance cock, silver regulator dial. Dial and movement signed. 
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Diameter: 44 mm
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Signed: Balsiger & Fils  Genève