1960s Wittnauer "Professional Chronograph" Val-72 Black Racing Dial

This is a rare 1960s Wittner "Professional Chronograph" with the famous Val-72 black racing dial. The black two-tone dial with vivid racing colors has a multi-colored and scale design with white tach and blue telemeter on a red background, and each small second is framed by a mirror circle, which is a wonderful and elaborate dial design unique to this era. The thick screw back water resistant case is designed to fit comfortably on the wrist by curving the lugs, and it is equipped with the famous Cal.72 made by Valjoux, which was also installed in Rolex of the same age.