I have a omega geneve dynamic self winding with a screw back. Dial is two tone/ blue ring with a silver gray backing surrounding it. Sweep second hand and date. I purchased it in the late 60's while in the service. Any info on this would be welcomed.
There are too many Dynamic models to be able to give any specific information. You may wish to check out of subscription service price guide at: www.vintagewatchpriceguide.com