French gold quarter repeating à toc pocket watch Circa 1803

Gold watch with ruby cylinder escapement 
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A rare French 18 carat gold pocket watch with quarter repeating à toc and ruby cylinder escapement, circa 1803. An Empire case by Joly (master mark), engine turned and polished, reeded band, gilt brass cuvette. White enamel dial by Borel, Breguet numerals and outer minute track, secret signature below 12 and blued steel Breguet hands. Gilt movement, standing barrel, overhanging ruby cylinder escapement, plain three-arm balance with a parachute on the top pivot, blued steel flat balance spring, index regulator with bimetallic temperature compensation curb, all-or-nothing repeating with two hammers on the side of the case activated by depressing the pendant. The dial is signed.
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Diameter: 50 mm
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Thickness: 16 mm
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Signed: Brequet  Paris