Swiss gold quarter repeating musical watch Circa 1820

Gold cylinder pocket watch
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A very fine Swiss 18K gold musical watch playing on the hour or at will, with quarter-repeater, circa 1820. Engine-turned case, gilt hinged cuvette, bolt at 7 o’clock to activate the music, lever at 8 o’clock protruding from under the cuvette for music/silent. Gold dial, engine-turned wave pattern, champlevé Roman numerals, outer minute dot divisions. Blued steel Breguet hands. Gilt brass, fixed barrels, cylinder escapement, three-arm gold balance with flat balance spring, sur plateau pinned disc musical movement, 24 tuned vibrating blades acting on both sides of the pinned disc, repeating on gongs by depressing the pendant. Punched with the maker’s mark in a lozenge, numbered on the movement under the dial, case punched with the same number.
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Diameter: 57 mm
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Signed: No Name