Swiss astronomical watch with perpetual calendar Circa 1790

Gilt open faced astronomical watch
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One of the earliest astronomical pocket watches with a perpetual calendar, made by Meuron & Comp., who operated from Neuchâtel, La Chaux-de-Fonds and Geneva, Switzerland and Paris, France, circa 1790. This pocket watch has a gilt open faced case and a white enamel dial with inner Arabic hour numerals, outer minute divisions with Arabic quarter hours, subsidiary dials for the days of the week at 2 o’clock, moon phases and age at 4, the seconds at 6, the month at 8, the days of the month at 10 and the bissextile year indicator at 12 o’clock, gilt hands. The astronomical movement has a verge escapement and seven complications.
Movement signed.
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Diameter: 56 mm
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Weight: 132 g
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Signed: Meuron & Comp. 
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Meuron & Comp. à Genève
Tardys states that Swiss watch and clockmakers Meuron & Comp. worked in Paris in the early 19^th century. The company had premises in Neuchatel, La Chaux-de-Fonds, Paris and Geneva. They offered a wide range of horological instruments and specialized in the production of watches as well as clocks.
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Meuron & Cie
Meuron & Cie was a Swiss watchmaker and dealer active in Geneva, Neuchatel, La Chaux-de-Fonds and Paris around 1800. They produced chiming clocks, automatic skeleton clocks, and pedometers. They supplied pedometer watches to Jaquet-Droz, and their watches were usually gold with pearl and enamel decorations. The company suffered a major loss in 1794 when a fire destroyed a collection of valuable Breguet watches in La Chaux-de-Fonds. They also supplied pocket watches, clocks, and travel clocks. Meuron & Cie was owned by three business partners: François Meuron, Jean-Jacques Thourneisen, and Jacques-Louis Pourtalès. They had representatives in Belgium, including Overmann Frères, Charles-Frédéric Dubois in Brussels, JC Lambrechts & Sohn in Liège, watchmakers in Antwerp and Louis Marquis in Luxembourg.