Patek Philippe Calatrava 3820J Silver Breguet Dial Tear Drop Lugs in 18k Yellow GoldIntroduced in 1932 during the Great Depression, the Patek Philippe Calatrava Ref. 96 was heavily influenced by the German Bauhaus principle of form follows function. As Patek Philippes first serially produced wristwatch, it played a crucial role in the companys survival by offering a modern, minimalist alternative to ornate pocket watches. Named after the 12th century Spanish Order of Calatrava, it remains the benchmark for the classic dress watch.