The Patek Philippe Perpetual Calendar Ref. 3945 was introduced in 1985 and produced through 1998 as a bracelet alternative to the 3940, another icon in the brands catalogue. These watches feature a classically designed perpetual calendar dial with the day and 24 hour subdial at 9 oclock, a moonphase and date display at 6 oclock and month and leap year indicator at 3 oclock. The example offered here is an extremely rare white gold 3945, the most rare metal variation, in wonderful condition with a long 19cm bracelet. This watch features a pristine 2nd series dial.