Swiss attractive 18K gold decorated pendant watch Circa 1855

Gold, enamel and diamond-set watch with chain
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A Swiss attractive 18K gold, enamel and diamond-set open faced cylinder pendant watch with corresponding gold and enamel watch chain and winding key studded with diamonds, circa 1855.
The case is translucent cobalt blue enamel on an engine-turned ground with an engraved flower sprig set with rose-cut diamonds, the waved rim is decorated with engraved gold volutes. White enamel dial with Roman numerals and outer minute divisions.
Bridge movement, cylinder escapement, brass ring balance and key-winding.
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Diameter: 50 mm
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Weight: 87 g
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Signed: Rossel-Bautte & Cie à Genève
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Jean-Francois Bautte (1772-1837) was the most distinguished watchmaker and retailer in Geneva of his time. Shortly after his death in 1837, Bautte’s son Jacques Bautte and son-in-law Jean-Samuel Rossel formed the company Jean-François Bautte & Cie, a retailer of timepieces and jewellery. From 1855 on the company traded as Rossel-Bautte & Cie, and from 1860 on as Rossel & Fils. In 1906 the company was taken over by Constant Girard-Gallet, the owner of Swiss watch manufacturer Girard-Perregaux in La Chaux-de-Fonds. The Girard-Perregaux Museum in La Chaux-de-Fonds owns several creations from the house of Bautte.