French gold open faced quarter repeating watch Circa 1820

Pink gold quarter repeating watch
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A French pink gold open faced quarter repeating watch, circa 1820, gilt movement, ruby cylinder escapement, three-arm brass balance, parachute suspension on the upper pivot, bimetallic temperature compensation curb, pull and twist a toc(dumb) repeating piston in the pendant, signed and numbered gilt cuvette.
Silvered engine-turned dial, Roman numerals, blued steel moon hands, 18k pink gold engine-turned case with border, dial and cuvette signed.
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Diameter: 49 mm
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Signed: Breguet et fils
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With a double link chain and a key.