Patek Philippe

Among Patek Philippe’s illustrious lineage of perpetual calendar chronographs, reference 2499 stands as one of the most important and revered models ever created. As the direct successor to the groundbreaking reference 1518—the world’s first perpetual calendar chronograph produced in series—and the predecessor to reference 3970, the 2499 represents the perfect balance between tradition and innovation.

Produced over a 35-year period from 1950 to 1985, a total of only 349 examples were made, underscoring Patek Philippe’s rigorous commitment to craftsmanship and exclusivity. Each watch was carefully hand-finished, ensuring that no two pieces were exactly alike.

Over its lifespan, reference 2499 evolved through four distinct series, each bearing subtle yet significant refinements:

• The first series (1950–1960) is instantly recognizable by its square chronograph pushers, Arabic numerals, and a tachymeter scale around the dial—a rare and charismatic combination that has made this series particularly sought-after by connoisseurs.
• The second series (1955–1964) introduced round pump-style pushers, now considered a defining feature of the reference. These were paired with dials that continued to feature tachymeter scales, but with a mix of Arabic and baton hour markers, depending on the configuration.
• The third series (1960–1978) marked a shift toward a more contemporary aesthetic. The tachymeter scale was removed, and the dial layout became cleaner and more modern, using only applied baton indexes.
• The fourth and final series (1978–1985) closely mirrored the third but was upgraded with a sapphire crystal, offering greater durability and scratch resistance while retaining the elegant proportions and design language of its predecessor.

The present example hails from this final and highly collectible fourth series. Beyond its historical and technical significance, this watch carries exceptional provenance: it is offered directly from the family of the original owner. This fresh-to-market status only adds to its desirability, presenting a rare and special opportunity for collectors to acquire one of the most celebrated perpetual calendar chronographs in the history of horology.

Admired for its harmonious proportions, mechanical sophistication, and timeless elegance, reference 2499 has long captivated the imagination of collectors and watchmakers alike. Its legacy continues to influence modern Patek Philippe design, most notably with the introduction of reference 5970 in 2004—a clear homage to the enduring spirit of the 2499.

In every respect, the present watch represents a masterclass in haute horlogerie and a cornerstone in the pantheon of collectible timepieces. From the original owner a captain of industry who wore this fine timepiece as his daily watch while purchasing over 400 companies, some of them, known around the world.