Patek Philippe Perpetual Calendar With Split-Seconds Reference 2025. The perpetual calendar displays are harmoniously arranged, with the date indicated by a hand and a moon phase at 6 o’clock, as well as a twin day/month aperture at 12 o’clock, complemented by two round. This design is exclusive to patek.
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 first to. The 1518 ushered in a totally new era for patek philippe and shaped the coming decades for all of watchmaking.