Patek Philippe Celestial With Archive Paper

Patek Philippe Celestial Reference 5102 features a 43mm case housing a deeply mesmerizing multi-layered blue dial that depicts a miniature configuration of the northern hemisphere's night sky. The complex dial accurately tracks the apparent movement of the stars, the orbit and phases of the moon, and the meridian passage of Sirius. This sophisticated sky map relies on three separate sapphire crystal discs rotating at different speeds to achieve extreme astronomical precision. Driven by the automatic Caliber 240 LU CL, the timepiece features dual crowns on the right flank, one to wind the movement and set the time, and the other to adjust the celestial map and moon phase.