This Kind of design has a long background at Patek, courting back into the early sixties Using the ref. 2597 Travel Time Calatrava. As James Stacey described in his Arms-On While using the 5164R in 2019, the movement in the 2597 originated from your brain of Louis Cottier – the https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/