Here is the first model identified with only the mention “De Ville” on the dial, successor to the De Ville Seamaster which had the mention in addition on the dial. The dial also made of solid gold, with its golden and onyx hour markers and its hands so particular to Omega, and the date at 3 o’clock powered by the caliber 565 with a date.
This is a watch with a gold-plated Unicoc case with some traces of use on its back.