This Sort of style has a long history at Patek, relationship back again for the early 1960s Using the ref. 2597 Travel Time Calatrava. As James Stacey described in his Hands-On with the 5164R in 2019, the movement while in the 2597 originated within the intellect of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/