Patek Philippe Sky Moon 5102

Sky Moon Ref. 5102 is an astronomical watch by Patek Philippe.

This extravagant luxury watch with self-winding movement shows a detailed view of the northern night sky in its uniform rotation, the angular motion of the moon and the moon phase, while a golden ellipse frames that part of the sky, which can be seen above the city of Geneva. On the 12-hour scale the hours and minutes for mean solar time are displayed at the periphery.

The movement consists of 301 components and has as a basis the same mechanism which was originally developed by Patek Philippe for the pocket watch Star Calibre 2000 and then was further miniaturized for the model Sky Moon Tourbillon.

Patek Philippe won the "Aiguille d'Or" Grand Prix at the Grand Prix d'Horlogerie de Genève for the Ref. 5102 Ciel Lune in November, 2002.

Movement: Self-winding manufacture movement Calibre 240 CL LU (240/165), 21,600 A/h Microrotor in 22ct gold, unidirectional winding 45 jewels Gyromax balance Breguet hairspring Stud: movable Geneva Seal 301 components Power reserve: ca. 48 hours Case: 18ct white gold, middle section with decoration of half Calatrava Crosses D 43.1 mm, H 9.78 mm Sapphire crystal Sapphire crystal caseback Waterproof to 30 m Dial: Three metallized sapphire crystal discs Sapphire cover glass with metallized Roman numerals from I to XII on the inside Elliptical contour as limiting of the part of the sky visible from Geneva Hours and minutes hands: skeletonized Feuille hands, gold, white lacquered Functions: Hours, Minutes of mean solar time Star map, time of meridian passage of Sirius Time of meridian passage of the moon Angular movement of the moon and moon phases Bracelet: Hand-sewn crocodile leather 18 mm tang-type buckle in 18ct white gold