Patek Philippe Grand Complications Perpetual Calendar Chronograph 41mm 18K Yellow Gold Silvery Opaline Dial (Ref# 5270J-001)

41 mm 18K yellow gold case entirely polished with a concave bezel and two-tier lugs, 12.4 mm thick, pushers satin-finished on the side and polished on top, with a sapphire crystal case back. Silvery opaline dial with yellow gold applied faceted baton-style hour markers, yellow gold leaf-shaped hands, and a tachymeter scale. 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. Matte chocolate brown alligator leather strap with square scales, hand-stitched, with a yellow gold fold-over clasp. Water-resistant to 30 metres / 100 feet. Patek Philippe Seal certified.