Patek Philippe 5004P Perpetual Calendar Split Seconds Chronograph

Patek Philippe is known for its mastery of complications. The brand developed the first perpetual calendar chronograph, the ref. 1518, in 1941, later followed by iconic references such as the 2499 and 3970. Patek eventually released a more elaborate, and arguably more iconic, split-second perpetual calendar: the 5004.

The 5004 was the first serially produced perpetual calendar chronograph with split-seconds and was produced from 1994 to 2012. According to the brand, only twelve 5004 models were delivered per year, which makes these exceedingly rare. 

The brilliance of the 5004 was that it seamlessly integrated into the footprint of the existing standard perpetual calendar chronograph, the 3970. Measuring just 36.7mm in diameter, the 5004 was a bold 15mm thick due to the addition of the rattrapante mechanism. Visually, other than a convex bezel, the only prominent distinguisher from the 3970 was the split-second pusher integrated into the crown. Each detail contributes to a watch that is proportionally balanced and visually refined.

This particular example, a Ref. 5004P, is a stunner. Its platinum case contrasts with a deep black dial featuring applied Arabic numerals, framed by a beautiful bezel with an elegant step detail. Flipping the watch over reveals the breathtaking 407-component caliber CHR-27 70Q, a derivative of the legendary Lemania 2310, rebuilt by Patek to accommodate the perpetual and split seconds enhancements and adding substantial depth. 

At each and every turn, this watch is executed to the highest degree. From complication to finishing, the 5004 is truly the pinnacle of Patek Philippe’s work with high complications— a museum-worthy testament to the legacy of Patek Philippe.