Introduced in 1996, the Ref. 5035 is the world’s first annual calendar wristwatch. This complication automatically accounts for months with 30 and 31 days, requiring manual adjustment only once a year at the end of February. In production until 2005, this specific example is cased in 18K white gold and features a stunning salmon dial—one of the most coveted combinations among collectors. Complete with its Certificate of Origin and box, it represents a landmark piece of horological history.