With Patek Philippe Extract from the Archives confirming production of the present watch with luminous Breguet figures in 1947 and its subsequent sale on 30 June 1950. Few complicated Patek Philippe references are as rare as mythical reference 1563 with only three examples, all cased in yellow gold, known publicly to exist. Resembling Patek Philippe's well-known reference 1463 with round chronograph pushers, reference 1563 is remarkable as it also features a water-resistant screw back case, like reference 1463 and also contains a split seconds function on top of the 13 lignes caliber usually found in reference 1436.