Swiss gold hunting cased repeater with self striking Circa 1820

Gold watch with cylinder escapement 
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A technical rarity, heavy, early pink gold hunting cased repeater with “Grande Sonnerie”, extremely rare, very fine caliber, probably Genèva circa 1820. An 18k pink gold, not punched, very rare, early hunting cased shape, high quality case, highly interesting and in this version extremely rare striking mechanism with quarter-hour self-striking and quarter-hour repeating, special movement with three plates, upper plate skeletonized, entire striking mechanism visible, many special features and technically exceptional solutions, the watch is a masterpiece of watchmaking, cylinder escapement, enamel dial, gold hands, intact, rarity.
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Diameter: 61 mm
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Weight: 148 g
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Signed: No Name
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Minute hand probably not original