Swiss quarter repeating gold open faced watch Circa 1829

Quarter repeating gold open faced watch
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A Swiss Vacheron Constantin watch with one horological complication, 18k yellow gold, circa 1829. Gilded brass movement with going barrel, cylinder escapement, monometallic balance (probably in gold) and blued steel flat hairspring, index regulator with temperature compensating bimetallic curb.
18K yellow gold case, open faced, keywind, round-shaped, pocket watch, hinged case back, subsidiary seconds at 3:30, and one horological complication: Quarter repeater on two steel gongs, activated by depressing the pendant. Cuvette signed.
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Diameter 49 mm
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Signed: Vacheron Constantin