Such A layout has a lengthy background at Patek, relationship back into the early sixties with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Hands-On With all the 5164R in 2019, the movement in the 2597 originated within the thoughts of Louis Cottier – The daddy https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/