1940s Omega 33.3CHRO 38mm Water-Resistant Chronograph White Enamel Black Luminous Dial

This is a very rare 38mm water proof chronograph with white enamel and black luminous dial, manufactured in the early 1940s and equipped with the famous Omega Cal.33.3CHRO ss. It uses an early type waterproof case with engraved back which is rare among the precious waterproof cases. The dial is white enamel on a black gilt base with green pulsation notation, making it a very rare example of the best of the 33.3 chronograph, a masterpiece of multi-colored and scale design. It is a rare example of the Le 33.3 chronograph with printed indexes.