Patek Philippe Split-Seconds Chronograph Perpetual Calendar Ref. 5204P-011 The Patek Philippe Split-Seconds Chronograph Perpetual Calendar ref. 5204P-011, introduced in 2014, has a 40.2 mm platinum case, 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 - Split-seconds chronograph with 30-minute counter; perpetual calendar, moon phases, day/night indication, small seconds - 40.2 mm platinum case, 14.3 mm thick, water resistant to 30 metres - Dial: ebony-black opaline, gold applied hour markers with luminescent coating - Shiny black alligator strap, fold-over clasp Full set. Maker: Patek Philippe. Reference: 5204P-011. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.