Patek Philippe Grand Complications Chronograph Perpetual Calendar - Platinum - Golden Opaline Dial - 5270P-001

41 mm platinum case, 12.4 mm thick, interchangeable full back and sapphire-crystal back, golden opaline dial with blackened gold applied numerals, caliber CH 29-535 PS Q manually wound movement with day, month, leap year and day/night display in apertures, date by hand, seconds subdial, tachymeter scale, approximately 55-65 hours of power reserve, shiny chocolate brown alligator strap with square scales, fold-over buckle. Water resistant to 30 m.