This watch is the Patek Philippe Celestial, reference number 6102P (or the previous version 5102). This watch is considered a rare artistic and mechanical masterpiece, and it features: Celestial Dial: Displays a star map of the sky in the Northern Hemisphere. Astronomical Functions: Shows the movement of stars, moon phases, and the time the moon crosses the equator. It comes with a crocodile leather strap and has two crowns on the side to control the time and astronomical functions. It is a piece for collectors of luxury watches who appreciate high astronomical complications. Price 1500 💎💫🔥🧐