18ct yellow gold Patek Philippe Perpetual Calendar 5059J. Automatic mechanical PP 315/236 calibre movement. 36mm case diameter. White dial with Roman Numeral hour markers. Functions include perpetual calendar, day displayed at the 9 o’clock position, month displayed at the 3 o’clock position and date indicated by a centre sweep with numbers around the top two 3rds of the dial, moonphase (lunar-calendar) at the 6 o’clock position and Leap year indication at the 12 o’clock position. Patek black croc strap with 18ct Patek folding clasp. Box and papers November 2006. Service papers dated June 2016.