This particular Patek Philippe model is in excellent condition, barely worn, and owned by a customer of our watch shop who is looking to update his collection. Patek Philippe Annual CalendarThe Patek Philippe Annual Calendar Chronograph 5960/1A-001 is a sophisticated blend of sophisticated design and cutting-edge functionality. This stainless steel model, introduced in 2014, was the first in the 5960 collection to feature a steel case and bracelet, distinguishing itself from previous precious metal versions. Powered by the automatic caliber CH 28-520 IRM QA 24H, it offers complications such as an annual calendar, a flyback chronograph, and a power reserve indicator, all housed in a 40.5mm case with a refined white opaline dial. The transparent sapphire crystal case back allows for admiration of the movement.