Vintage IWC Calatrava with calibre 83. This vintage watch will come with the black leather strap in the second picture. The dial has been professionally refinished before. Movement is running well.

IWC’s manual winding calibre 83 was produced in the 1930s to 1940s, and layout closely resembled the IWC pocket watch calibres of the same era, Cal.95 and Cal.98. One of the major alterations that were made to it during its life was the addition of Incabloc shock resistance when it was redesigned for use in the Mark X military watch.