Reference 5970P-001 | A platinum perpetual calendar chronograph wristwatch, Single Sealed, Circa 2009
Patek Philippe
Dial: black Caliber: cal. CH 27-70 Q mechanical, 24 jewels Movement number: 3’049’775 Case: platinum, screw down sapphire crystal display back Case number: 4’476’929 Closure: platinum Patek Philippe folding clasp Size: 40 mm diameter Signed: case, dial, and movement Box: no Papers: yes Accessories: Patek Philippe factory packaging, Certificate of Origin dated 9 June 2009, an additional sealed solid case back, leather bi-fold, operating instructions book, booklets, sealed setting pin, and sealed hangtag The Patek Philippe 5970 is not only one of the brand’s most iconic timepieces but also a defining masterpiece in modern watchmaking history. Its origins trace back to the 1930s, a period when Patek Philippe—despite its already esteemed reputation—was not immune to the devastating effects of the Great Depression. The company’s salvation came at the hands of the Stern family, particularly Philippe Stern, who played a pivotal role in securing its future. As with any family business, leadership eventually transitions, and in 2009, Philippe’s son, Thierry Stern, assumed control. One of his first major undertakings was the launch of the 5970, a watch that symbolized both the end of an era and the dawn of a new one. With a keen understanding of this generational shift, the younger Stern sought to craft a timepiece that would resonate with both seasoned collectors and a new wave of enthusiasts. At the time of its release, the 5970 was the largest perpetual calendar chronograph Patek Philippe had ever produced, significantly larger than its predecessor, the beloved Ref. 3970, which measured 36mm in diameter. Thierry Stern explained that the increase in size was primarily for improved legibility, though it also aligned with the broader industry trend toward larger watches. Despite this change, both references were powered by a heavily modified version of the Lemania 2310 chronograph caliber, refined in-house by Patek Philippe. To maintain visual harmony on the expanded dial, a tachymeter scale was introduced beyond the railroad seconds track, both to balance the design and pay homage to the first and second series of the 2499. Additionally, square pushers—reminiscent of the revered Ref. 1518 and first-series 2499—were reintroduced, reinforcing the watch’s seamless fusion of vintage and modern aesthetics. Produced in a single series from 2004 to 2011, it is estimated that only 2,800 examples were made across all metals. Of these, fewer than 400 were crafted in platinum, exclusively between 2009 and 2010, making the present example an exceptionally rare and sought-after piece. The present lot is fitted with an elegant black dial.
