Patek Philippe Chronograph Perpetual Calendar Ref. 5271P-001 The Patek Philippe Chronograph Perpetual Calendar ref. 5271P-001, introduced in 2014, has a 41 mm platinum case, set with diamonds, a black lacquered dial and the manual-winding Calibre CH 29-535 PS Q. The reference is no longer part of Patek Philippe's collection. - Manual-winding Calibre CH 29-535 PS Q - Chronograph; perpetual calendar with day, month, leap year and day/night in apertures, date by hand - 41 mm platinum case, 12.7 mm thick, water resistant to 30 metres - Dial: black lacquered, applied gold hour markers and a baguette diamond at 12 o’clock - Bezel and lugs set with 58 baguette diamonds (~3.63 ct); clasp set with 22 baguette diamonds (~0.97 ct) - Shiny black alligator strap, fold-over clasp set with 22 baguette diamonds Full set. Maker: Patek Philippe. Reference: 5271P-001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.