Patek Philippe Calatrava 3820J Silver Dial Applied Breguet Numerals in 18k yellow gold with Original Certificate of Origine nylon-straps The white dial has a

The white dial has a railroad track within the edge of the dial

This watch and is powered by the automatic Omega Calibre 1045

The 242T is driven by a Valjoux 72 movement

Black bezel insert

Patek Philippe Calatrava 3820J Silver Dial Applied Breguet Numerals in 18k yellow gold with Original Certificate of Origine nylon-straps The white dial has aPresented in 1932, amid the challenges of the Great Depression, the Patek Philippe Calatrava Ref. 96 signaled a new direction for Patek Philippe. Drawing clear inspiration from the Bauhaus doctrine of form follows function, it became the firms first serially produced wristwatch and introduced a restrained, contemporary aesthetic at a time when ornate pocket watches still dominated. Named after the 12th century Spanish Order of Calatrava, it has since