Two modern Patek Philippe references that balance mechanical complexity with equally considered design. The reference 5146/1J centers on one of Patek’s most practical complications — the annual calendar — with a full calendar display, moon phase and power reserve, all driven by a self-winding caliber. Designed to require just one correction per year, it remains among the most useful and legible complications for daily wear. Alongside it, the reference 5130/1R distills the ingenuity of the world time complication — simultaneously displaying 24 time zones, powered by the ultra-thin caliber 240 HU. In both, Patek Philippe’s bracelet-making is on full display. Executed entirely in gold, each integrates seamlessly into the case, wearing with a comfort that matches their technical ambition. Sotheby's New York Fine Watches Auction 20 – 31 March 12 PM ET #patekphillipe