IWC, Cal. 83 powered, rare 35 mm in diameter dial size, flat and wide Calatrava bezel, two-tone yellowed dial, circa 1940s. This model is a rare design with a flat bezel, which is different from the usual Calatrava bezeled watches. The dial is beautifully designed in a rare two-tone yellow color with applied indexes and leaf-shaped hands, and because of the flat bezel Calatrava case makes the beauty of this model stand out even more. It is preserved in excellent condition, the Calatrava case retains its edging on the bezel and lugs, and the rare colored dial retains its beautiful color and two-tone clarity. It is equipped with Cal.83, a famous international small-seconds watch.