Patek Philippe 44mm Celestial Grand Complications Watch Black Dial 6102R

44mm 18K rose gold case, sapphire-crystal back, Celestial dial with black sapphire-crystal disks for sky background and moon phases and transparent sapphire-crystal disk for sky chart and Milky Way, caliber 240 LU CL C self-winding movement with date by hand, hours and minutes of mean solar time, sky chart, phases and orbit of the moon, time of meridian passage of Sirius and of the moon, approximately 38-48 hours of power reserve, shiny black alligator strap with square scales, fold-over buckle. Water resistant to 30 m.