This exquisite Patek Philippe timepiece, Caliber 240 LU CL C, showcases a self-winding mechanical movement. It features a sophisticated display of hours and minutes of mean solar time, complemented by a handset date, sky chart, moon phases, and the orbit of the Moon, including the meridian passage times for Sirius and the Moon. The dial is a marvel, with black sapphire-crystal disks for the sky background and moon phases and a transparent sapphire-crystal disk illustrating the sky chart and Milky Way. Encased in rose gold with a diameter of 44 mm and a height of 11.33 mm, it is water-resistant to 30 meters and showcases a sapphire crystal case back. The watch is adorned with 60 baguette-cut diamonds, totaling approximately 5.4 carats, set into the bezel and clasp. It is completed with a hand-stitched, shiny black alligator strap with rectangular scales and a fold-over clasp.