Swiss gold verge watch with date and repetition Circa 1800

Gold open faced repeater
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A Swiss 18 carat gold open faced repeating pocket watch with date made by Brandt Jeanrenaud et Robert in La Chaux-de-Fonds, circa 1800. The gilt key wind movement with a verge escapement. White enamel dial with Arabic hour numerals, outer minute divisions, inner chapter for the date indication and fine hands. The plain stepped case with a ribbed band, a lever for silence and marked PS on the back. Dial signed, cuvette and movement signed and numbered.
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Diameter: 54 mm
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Weight: 128 g
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Signed: Brandt Jeanrenaud & Robert
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The watch works, but the repetition appears to be defective. Functionality is not guaranteed. Dial with chips at key wind.
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Brandt Jeanrenaud et Robert (also known as Robert Brandt et Jeanrenaud) was an early 19th century Swiss watchmaking firm based in La Chaux-de-Fonds. The company operated from the 1800s to the 1820s/1840s and was best known for pieces made between 1810 and 1820.
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Brandt Jeanrenaud et Robert made high quality pocket watches and clocks with remarkably complex mechanisms, always distinguished by interesting or unusual features, such as visible dials or independent jumping seconds.
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The company was presumably renamed Robert Brandt & Cie, continuing family and business traditions into the later 19th century.
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Some of the company’s historical timepieces are preserved in institutions like the Musée d’Art et d’Histoire de Neuchâtel.