This Type of style has a lengthy heritage at Patek, relationship back on the early nineteen sixties with the ref. 2597 Travel Time Calatrava. As James Stacey talked about in his Arms-On Along with the 5164R in 2019, the movement in the 2597 originated in the mind of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/