Patek Philippe Annual Calendar 5035R

In 1996, Patek Philippe introduced a complication that would change modern watchmaking forever: the world's first annual calendar wristwatch.

Until then, collectors generally faced a choice between a conventional calendar requiring frequent adjustments and a sophisticated perpetual calendar capable of accounting for leap years. Under Philippe Stern's leadership, Patek Philippe developed an entirely new solution that combined mechanical ingenuity with everyday practicality.

The reference 5035 was the result. Its patented movement automatically distinguishes between months containing 30 and 31 days, requiring just one manual calendar correction each year, at the end of February.

Presented in an elegant 37 mm case, the rose gold 5035R captures a defining moment in Patek Philippe's modern history: the birth of an entirely new category of mechanical complications.