French 18K gold quarter repeating à toc watch Circa 1804

Gold cylinder watch with jump hours
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An extremely fine and very rare, 18K gold French pocket watch with jump hours, quarter repeating à toc and ruby cylinder escapement, circa 1804. An engine-turned with polished bezel and border, reeded band, Empire by Amy Gros (master mark). Hinged gold cuvette. Silver dial, engine-turned, brushed chapter ring with radial Roman numerals, outer minute chapter with dot indexes, eccentric subsidiary seconds between 3 and 4 o’clock. Blued steel Breguet hands.

A gilt movement, standing barrel, overhanging ruby cylinder escapement, plain three-arm balance with parachute on the top pivot, blued steel flat balance spring, index regulator with bimetallic temperature compensation curb, all-or-nothing repeating with a single hammer on a block on the case activated by a pull-and-twist piston in the pendant. Dial, cuvette and movement signed.
Diameter: 56 mm
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Signed: Breguet  Paris
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Chaudoir brothers The Chaudoir brothers were well-known merchants in Warsaw who became Breguet’s Polish agents in that city. Emmanuel Breguet, Breguet, Horloger depuis 1775, Alain de Gourcuff Editeur, 1997.