Such A style has an extended historical past at Patek, dating back towards the early 1960s Together with the ref. 2597 Travel Time Calatrava. As James Stacey stated in his Fingers-On With all the 5164R in 2019, the motion in the 2597 originated with the brain of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/