Swiss quarter repeating cylinder by Courvoisier Circa 1830

Gold quarter repeating ruby cylinder
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A Swiss quarter repeating ruby cylinder with offset seconds by Courvoisier in a gold open face case, circa 1830. Keywind gilt bar movement with suspended going barrel. Plain cock, polished steel parachute with garnet endstone, blue steel regulator, temperature compensation curb. Plain three arm gilt balance with blue steel spiral hairspring. Ruby cylinder escapement and steel escape wheel. Push pendant quarter repeating on two polished steel gongs. White enamel dial with subsidiary seconds offset at 3 o’clock, Arabic numerals, blue steel hands. Slim engine-turned 18-carat open face case with engine turned middle. Maker’s mark ‘CAD’. Wound and set through the signed gilt metal cuvette.
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Diameter: 46 mm
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Signed: Courvoisier et Cie