Patek Philippe Perpetual Calendar Split-Seconds Chronograph

About this reference

The Patek Philippe 5951P-001 was introduced in 2010 and remained in production until approximately 2015. This reference is distinguished by its cushion-shaped platinum case and the caliber CHR 27-525 PS Q, which remains the thinnest column-wheel split-seconds chronograph movement with a perpetual calendar ever produced by the manufacture. Collectors prioritize this model for its technical density, as the movement measures only 7.3mm in height despite its 400 components. The dial features a black lacquer finish with red accents and white gold Breguet numerals, a departure from the brand’s traditional aesthetic. On the secondary market, the 5951P-001 typically commands prices in the mid-to-high six-figure range, often between $350,000 and $500,000 depending on provenance. A notable production detail is the single Top Wesselton diamond set into the case at 6 o'clock, signifying its platinum construction. Low production numbers make this reference a rare find at auction.