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A unique, incredibly well-made and historically important two-train minute repeating grande and petite sonnerie wristwatch with hinged case in yellow gold and enamel dial bearing movement number 1
1992
41mm Diameter
Case, dial and movement signed
Estimate
CHF1,000,000 - 2,000,000
€935,000-1,870,000
$1,090,000-2,180,000
Sold for CHF4,749,000