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A very oversized, highly important, and possibly unique yellow gold split-seconds chronograph wristwatch with enamel dial, Guillaume balance, and hinged caseback
1915
52mm Diameter
Case, dial, and movement signed. Movement additionally signed with patent number 54714; dial additionally signed with movement number.
Estimate
$40,000 - 80,000
CHF36,400-72,700
€36,800-73,600
HK$312,000-624,000
Sold for $114,300