Swiss rose gold quarter repeating cylinder watch Circa 1815

Gold repeater with visible movement by Robert & Courvoisier
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A very fine, rare, thin and large Swiss 18 carat rose gold open faced quarter repeating cylinder pocket watch with visible movement, circa 1815. Frosted gilt full plate movement, cylinder escapement, three-arm brass balance, flat balance spring, index regulator, polished steel bridge, repeating on gongs activated by depressing the pendant, polished steel repeating work on the backplate. Spring-loaded gilt metal cuvette. Annular white enamel dial with Breguet numerals, outer minute divisions, the centre with aperture exposing the movement and original blued steel skeletonized hands. Polished case, concave bezel, concealed hinge. Dial and cuvette signed.
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Diameter: 61 mm
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Signed: Robert & Courvoisier La Chaux-de-Fonds
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Robert & Courvoisier are clock and watchmakers from La Chaux-de-Fonds, Switzerland. The firm was founded in 1795 as a successor to J. Robert & Fils, Courvoisier. In 1770 the firm was originally established by Josué Robert (1691–1771). After Robert’s death, a year after the company was founded, the firm was renamed Josué Robert & Fils and was led by his son Louis Benjamin Robert (1732–1781). They mainly produced large clockworks, but as Benjamin’s son-in-law, Louis Courvoisier became a companion, pocket watches were put into production. When Louis Benjamin died, Louis Courvoisier became the manager of the firm. From 1787 to 1795 the firm was called J. Robert & Fils, Courvoisier. From 1795 to 1805 it was renamed Robert & Courvoisier. Since 1805 the firm’s name was Robert, Courvoisier & Cie with Philip Grandjean as a business partner. In 1852 it became Courvoisier Frères. The firm continued under the direction of various members of the Courvoisier family until the 1930s. Along with the Jaquet-Droz firm, they were the most important makers of musical clocks and around the turn of the 18^th and 19^th centuries, their portable officers’ watches were famous.