Such A layout has a protracted record at Patek, relationship again towards the early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Palms-On with the 5164R in 2019, the motion while in the 2597 originated in the intellect of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/