The Patek Philippe 5960P-001 Annual Calendar Chronograph represents a modern milestone for the illustrious Genevan maison, debuting in 2006 as the first ever in-house self-winding chronograph combined with an annual calendar. Crafted in luxurious platinum, this reference is appointed with a distinct gray dial and discreet red accents, lending contemporary contrast to classic aesthetics. Its in-house Caliber CH 28-520 IRM QA 24H stands as a technical triumph, featuring vertical clutch column wheel chronograph works and a sophisticated annual calendar mechanism requiring adjustment only once per year. The 40.5mm case is substantial yet impeccably balanced on the wrist, especially when paired with its brown alligator strap—a collector-favored combination. Signature features such as the power reserve indication, day, date, and month apertures at top, and a mono-counter at six o’clock, reinforce the reference’s singular place in modern Patek lineage. This model is revered both for its mechanical innovation and handsome execution, solidifying its status among the definitive complicated Pateks of the early 21st century. As a discontinued reference, the 5960P-001 has become increasingly difficult to acquire, appealing to connoisseurs seeking one of the brand’s most notable modern complications. Like New with Patek Philippe box, setting pin, service papers dated 2022 and original certificate dated 2012.