Gents desireable Patek Philippe Perpetual Calendar Chronograph in 18k Yellow gold, Ref # 5970J. Original strap with 18k Yellow gold deployant buckle, solid and sapphire display casebacks, square chronograph pushers, case diameter 40mm. Manually wound chronograph with 30 minute counter, perpetual calendar and moon phases. Silver dial with day, date, month, leap year, moon phases and am/pm indicator and subseconds register, tachymetric scale on outer edge of dial. Box, papers dated July 2009 & pusher. Mint condition.