Patek Philippe Complications Annual Calendar Chronograph 42mm Platinum

The Patek Philippe Complications Annual Calendar Chronograph Ref. 5905P-001 features a 42mm platinum case with 13.77mm thickness, housing the sophisticated Calibre CH 28-520 QA 24H movement. This automatic chronograph operates at 28,800 vibrations per hour with 45-55 hour power reserve, incorporating 456 components and 35 jewels. The movement features column wheel chronograph architecture with annual calendar complication requiring correction only once yearly in February.

The blue dial displays comprehensive calendar information including day, date, month, moon phases, and 24-hour indication, complemented by chronograph subdials at 3 and 9 o'clock. Technical specifications include sapphire crystal front and back, screw-down crown, and platinum fold-over clasp. The blue crocodile leather strap provides luxury comfort with deployant clasp integration.

Water resistance tested to 30 meters ensures dress watch capability while the annual calendar mechanism automatically accounts for varying month lengths. The chronograph function delivers precise timing with flyback capability and tachymeter scale. This example includes original papers and box for enhanced authenticity. Buy this preowned Complications Annual Calendar Chronograph 42mm Platinum on Master Luxury with papers and original box at investment value.