With a production span of slightly more than 10 years (1993-2002), it is estimated that approximately 100 pieces were made per year, in all types of metal. With a beautifully proportioned perpetual calendar featuring a retrograde date (it took some time for the market to truly appreciate this technical feat, later adopted on reference 5016 as well), it was bound to become a classic. This yellow gold example has been kept in very good condition with crisp hallmarks to the case and complete with its original certificate and extra caseback. Probably one of the most under-appreciated perpetual calendars made by the firm.