Patek Philippe Perpetual Calendar Split-Seconds Chronograph

About this reference

The Patek Philippe Reference 5004 was produced between 1994 and 2011, featuring the manual-wind Caliber CHR 27-70 Q based on a Lemania ébauche. While the standard production utilized precious metals, the 5004A in stainless steel was released in 2011 as a final edition of 50 pieces to mark the end of the series. Collectors prioritize this variant due to the rarity of steel cases in Patek Philippe’s grand complications and its technical complexity as a split-seconds chronograph with a perpetual calendar. The 5004A features a black dial with white gold Arabic numerals and a tachymeter scale. On the secondary market, these watches typically command prices between $700,000 and $1,000,000. A unique titanium version was produced for the 2011 Only Watch auction, but the 5004A remains the most sought-after production iteration due to its limited fifty-unit run and historical transition to the in-house 5204.