Patek Philippe Ref. 2025 Perpetual Calendar Chronograph Movement. Patek philippe was the very first to create a perpetual calendar wristwatch in 1925, the first to create a retrograde perpetual calendar wristwatch in 1937, and the very. The patek philippe perpetual calendar is one of the most popular watches to feature a perpetual calendar.

Patek philippe rejuvenates its classic 5270p perpetual calendar chronograph with a green lacquered dial, which changes everything! The patek philippe perpetual calendar chronograph ref.