1930s Longines Cal.13zn 37mm Big Calatrava Flyback Chronograph Rare Black Gilt Dial

Longines, Cal. 13zn, 37mm, big calatrava, flyback chronograph, rare black gilt dial, circa 1930s. It has a silver dial with blued steel hands. It is a very rare black gilt dial flyback chronograph with big Calatrava design. The rare black dial is designed with Arabic indexes and bar hands for excellent legibility, and combined with the oversized case of over 37mm, it is a gem with a great taste reminiscent of military watches.It comes with an archive.