Patek Philippe Grand Complications Perpetual Calendar Chronograph 41mm Platinum Lacquered Red Dial Ruby Bezel (Ref# 5271/12P-010)

41 mm platinum case 12.7 mm thick with a diamond set at 6 o'clock and a sapphire crystal case back. Bezel and lugs set with 58 baguette-cut rubies (4.11 cts) and a clasp set with 22 baguette-cut rubies (1.14 cts), for a total of 80 baguette-cut rubies (5.25 cts). Lacquered red dial with a black-gradient rim, white gold applied faceted “obus”-style hour markers, and white gold faceted dauphine-style hands. Manually wound caliber CH 29-535 PS Q, 32 mm in diameter and 7.00 mm thick, with 456 parts and 33 jewels, beating at 28,800 semi-oscillations per hour (4 Hz) with a Breguet balance spring. Functions: chronograph with central chronograph hand and instantaneous 30-minute counter, perpetual calendar with day and month in a double aperture at 12 o'clock, day/night and leap-year indications in round apertures, date by hand at 6 o'clock, moon phases, and small seconds. Power reserve with the chronograph disengaged of min. 55 hours to max. 65 hours. Shiny black alligator leather strap with square scales, hand-stitched with red stitching, and a platinum fold-over clasp set with rubies. Water-resistant to 30 metres / 100 feet. Patek Philippe Seal certified.