Patek Philippe Perpetual Calendar Reference 2025. 1518 retailed for $1,500 in 1946 whereas the more standard. Patek philippe began serial production of perpetual calendar wristwatches with the reference 1526 in 1941, and in 1962, the brand introduced its first automatic perpetual.
Day, month and leap year in apertures. Patek’s perpetual calendar retrograde date gets fastened to the wrist via a solid 18kt yellow gold folding clasp with the signature calatrava cross;