Patek Philippe refines the design of its legendary ultra-thin perpetual calendar
A legendary model A classic complication par excellence, the perpetual calendar occupies a place of honor in the Patek Philippe collection. Many of these mechanical marvels were crafted for pocket watches beginning when the manufacture was founded in 1839 and for wristwatches since 1925. The hundreds of smoothly interacting wheels, pinions, cams and levers perform a veritable ballet as they emulate the course of time. In 1985, Patek Philippe ushered in the new era of grand complications by crafting the Ref. 3940, the first highly complicated...