Patek Philippe Grande Complication Perpetual Calendar

41 mm platinum case, interchangeable full and sapphire-crystal back, bezel and lugs set with 58 baguette diamonds (~3.63 ct), black lacquered dial with gold applied hour markers and 1 baguette diamond at 12 o’clock, caliber CH 29-535 PS Q manually wound movement with central chronograph hand and instantaneous 30-minute counter, perpetual calendar, day, month, leap year and day/night display in apertures, date by hand, seconds subdial, tachymeter scale, moon phases, approximately 65 hours of power reserve, shiny black alligator strap with square scales, fold-over buckle set with 22 baguette diamonds (~0.97 ct). Water resistant to 30 m.