Perpetual Calendar 5050

Shown at Basel in 1993: the first serially made Patek perpetual with a retrogradeRetrograde handA hand that travels along an arc, then jumps back to its starting point when it reaches the end. date, combined with automaticAutomaticA mechanical movement wound by a rotor as the watch moves on the wrist. winding and centre secondsCentre secondsA seconds hand mounted on the same axis as the hour and minute hands.; day and month in apertures. Made in four metals.