Patek Philippe Perpetual Calendar Reference 2025 Date. This does not include patek philippe’s. Revolution founder wei koh makes a historical survey of patek philippe’s signature complication, the perpetual calendar chronograph.
It comes in a calatrava case with beautifully scalloped lugs and applied breguet numerals. In 1962, patek philippe released the reference 3448 an automatic perpetual calendar that was hailed as ‘the watch that thinks for itself’.