Patek Philippe Perpetual Calendar (Mid-century)

About this reference

The Patek Philippe Reference 2497 was produced between 1951 and 1963, serving as the brand's first series-produced perpetual calendar wristwatch with a center seconds hand. It utilizes the manual-wind Caliber 27-SC Q movement housed in a 37mm case, which was considered oversized for the era. Collectors prioritize this reference for its technical transition from the 1526 and its shared aesthetic DNA with the 2499 chronograph. The 18k pink gold variant is significantly rarer than the yellow gold version, with fewer than 40 examples identified in this metal. Key design evolutions include the shift from "Feuille" hands and applied Arabic numerals in the first series to "Dauphine" hands and baton markers in the second series. Current secondary market values for pink gold examples typically range from $400,000 to over $700,000, depending on provenance and case crispness, as evidenced by high-profile results at major Geneva auctions.