Such A style has a long history at Patek, courting back again for the early nineteen sixties While using the ref. 2597 Travel Time Calatrava. As James Stacey talked about in his Arms-On with the 5164R in 2019, the movement in the 2597 originated in the thoughts of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/