Fine Swiss gold enamel open faced cylinder watch circa 1840

Gold and enamel pocket watch by the firm Sandoz Ami & Fils
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A fine Swiss thin 18K gold open faced cylinder pocket watch with monochrome enamel painting, circa 1840-1855. This watch features a gilt jewelled movement with a cylinder escapement, ensuring accurate and reliable timekeeping. The enamel dial is adorned with decorative hands, adding a touch of elegance to its design. The case back showcases a stunning monochrome enamelled miniature painting of a dancing girl, surrounded by beautiful volute decor and intricately engraved floral edges. The bow and front bezel are also engraved, completing the overall sophisticated look of this watch.
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Diameter: 43 mm
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Signed: Ami Sandoz & Fils
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This timepiece is crafted by the renowned watchmaker, Sandoz, Ami, et Fils. The dome bears the signature of Ami Sandoz & Fils and is inscribed with the word BOHEMIENNE beneath a graceful dancing girl on the back cover. The watch is marked with the symbols D M in a horizontal triangle with dots at each corner, and 18 K with a horizontal line above and below.
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The company Ami Sandoz & Sons, Ami Sandoz & Fils or Ami Sandoz & Son, was active in Geneva and La Chaux-de-Fonds from around 1820 to circa 1900. The company won a silver medal at the World Exhibition in Paris in 1878. They used an elevator mechanism invented by Gustave Sandoz. The company also had connections with the watch shop run by the salesman Charles Gottlob Jonathan Seytz until he died on January 17, 1848, in Hyeres, France. In 1884 Ami Sandoz & Fils founded a branch at Markgrafenstrasse 76 in Berlin, but in the “General Apartment Gazette with Address and Business Manual for Berlin, its Surroundings and Charlottenburg” from 1861, an Ami Sandoz & Sons watch shop in Jerusalemmer Strasse 21f was recorded. The company in La Chaux-de-Fonds was continued as Ducommun-Sandoz & Cie.