French rose gold quarter repeating virgule pocket watch Circa 1820

Rose gold watch with virgule escapement by Breguet 
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A fine French 18 carat rose gold quarter repeating open faced virgule pocket watch, circa 1820. Matte gilt movement, standing barrel, four jewels, virgule escapement, three-arm brass balance, blued steel flat balance spring, index regulator, repeating on gongs with two polished steel hammers activated by depressing the pendant. Gilt hinged cuvette. Gold engine-turned dial with a checkerboard pattern, black Roman numerals on brushed reserves, outer minute divisions on a brushed ring and original blued steel Breguet hands. Case engine-turned grains d’orge, flat engine-turned band. Cuvette signed.
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Diameter: 57 mm
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Signed: Breguet à Paris