This Rare Platinum Patek Philippe Ref# 3970EP-021 With 5004 Dial Is Complete. Accompanied with certificate of origin, service documents from 2002 on dial change from Patek Philippe, second case back, setting pin, instruction manual and presentation box. This 3970EP-021 example is in excellent overall condition and has very crisp hallmarks. This watch is from 1999 and would a fourth and final series of the 3970's.

The 3970EP perpetual chronograph manual wind watch, features a 36 mm case. This is a rare platinum example with 5004 dial with arabic numerals, and platinum deployant buckle. Functions include hours, minutes, seconds, day, date, month, moon phase, leap year indicator, 24 hour indicator and chronograph.

Ref. 3970 was created following the success of the exceptional Ref. 2499. The design of the case of Ref. 3970, with its down-turned, fluted lugs, is clearly influenced by the form of the Ref. 2499. One main difference between the two models is the addition of the leap year indicator to the 3 o'clock subsidiary dial and 24-hour indicator to the 9 o'clock subsidiary dial. The Ref. 3970 is now considered a classic by collectors, following in the footsteps of its predecessors Ref. 1518, Ref. 2499. One can distinguish three series in the production of Ref. 3970. A series is defined by variations in case designs or features.