One of Pateks's most beautiful Annual Calendars, this 18ct white gold 5146G with elegant slate gray dial is in superb condition and comes as a perfect full set, complete with its original Patek box, papers, instructions and stylus. Proudly sporting an elegant moonphase at 6 o'clock and power reserve at 12, this evolution from the 5035 (Patek invented the annual calendar remember?) remains one of their most popular models.