Boisrouvray - 1948
This exquisite keyless pocket watch with a large hunter case in 18K gold features a Guillaume balance. It is made up of a carillon minute repeater with three hammers striking three gongs, a perpetual calendar with leap year and moon phase display, a split-seconds chronograph, a totalizing counter, and even an alarm. This piece was sold to Count Guy de Boisrouvray in 1948. Until 2015, this grand complication was the third most complicated watch ever produced by Vacheron Constantin.
