Patek Philippe Annual Calendar Flyback Chronograph Ref. 5905R-001 The Patek Philippe ref. 5905R-001, introduced at Baselworld 2019, combines an annual calendar with a flyback chronograph in a 42 mm rose-gold case with a brown sunburst dial shading to black and applied rose-gold markers. The reference is no longer part of Patek Philippe's collection. - Self-winding Calibre CH 28-520 QA 24H - Flyback chronograph - Annual calendar, 24-hour display - 42 mm rose-gold case - Brown sunburst dial shading to black Full set. Maker: Patek Philippe. Reference: 5905R-001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.