Sky Moon Tourbillon
Patek Philippes Sky Moon Tourbillon, ref. 5002, is a double-face timekeeper: the dial side features the mean solar time and perpetual calendar. The back of the watch has a nocturnal sky map, the phases of the moon and sidereal time. Not only is Patek Philippes Sky Moon Tourbillon the most complicated wristwatch of the current collection, it is also the first double-face wristwatch in the history of the Geneva-based manufacture. It incoporates twelve complications: perpetual calendar with retrograde date, week day, month, leap year cycle, age of the moon, minute repeater, tourbillon, map of the sky, sidereal time, angular movement of the moon and phases of the moon. The mechanical modulus of the astronomic indications displayed on the back of the watch with the nocturnal sky map is protected by Swiss patent CH 688 171 B5. The Sky Moon Tourbillon is delivered with a COSC chronometer certificate and its movement, like all movements created by Patek Philippe, has the privilege of bearing the Geneva hallmark. The manual winding movement comprises 686 different components, all hand-finished and assembled. Because of the time required and necessary to successfully carry out the numerous and delicate stages of the manufacturing process, only two examples of the Sky Moon Tourbillon will be produced every year.