Patek Philippe Split-Seconds Chronograph Perpetual Calendar Ref. 5204/1R-001 The Patek Philippe Split-Seconds Chronograph Perpetual Calendar ref. 5204/1R-001, introduced in 2016, has a 40.2 mm rose-gold case on a rose-gold bracelet, an ebony-black opaline dial and the manual-winding Calibre CHR 29-535 PS Q. The reference is no longer part of Patek Philippe's collection. - Manual-winding Calibre CHR 29-535 PS Q, power reserve min. 55 hours – max. 65 hours (chronograph disengaged) - Split-seconds chronograph, instantaneous 30-minute counter, perpetual calendar with day, month, leap year and day/night indication in apertures, date by hand, moon phases, small seconds - 40.2 mm rose-gold case, 14.3 mm thick, water resistant to 30 metres; interchangeable full back and sapphire-crystal case back - Dial: ebony-black opaline, gold applied hour markers with luminescent coating - Rose-gold bracelet, fold-over clasp Full set. Maker: Patek Philippe. Reference: 5204/1R-001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.