Patek Philippe Annual Calendar Chronograph Ref. 5960/1A-010 The Patek Philippe ref. 5960/1A-010, introduced in 2017, is the steel annual calendar flyback chronograph with a black dial, on a steel bracelet. It was produced only until 2018. - Self-winding Calibre CH 28-520 IRM QA 24H - Flyback chronograph - Annual calendar, power reserve, 24-hour display - 40.5 mm steel case - Black dial; steel bracelet Full set. Maker: Patek Philippe. Reference: 5960/1A-010. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.