Patek Philippe Perpetual Calendar Reference 2025. The patek philippe reference 1518 was launched in 1941 as a groundbreaking model, not only for patek philippe but for the entire fine watchmaking industry. Patek philippe is famous for its annual and perpetual calendars, but this one is different.
The perpetual calendar displays are harmoniously arranged, with the date indicated by a hand and a moon phase at 6 oโclock, as well as a twin day/month aperture at 12 oโclock,. Whilst a full review can be found here, below we summarize the five most expensive.