Patek Philippe Grand Complications 5236

Patek Philippe's Grand Complications 5236P-001 is a 41.3 mm platinum perpetual calendar with an in-line display. The case measures 11.07 mm thick and pairs with a sapphire display back. The self-winding calibre 31-260 PS QL drives day, date and month through a single aperture at 12 o'clock, with leap year and day/night indications alongside. Moon phases and small seconds sit at 6 o'clock. The blue dial has a black-gradient rim and vertical satin finish, with a diamond set at 6 o'clock on the case. A navy blue alligator leather strap closes on a platinum folding clasp. Water resistance is modest for the collection: the case takes 30 metres before the perpetual calendar mechanism needs to come off the wrist.