I got this Omega De Ville watch in a batch to look at. It didn’t run and it was impossible to wind it or set the time. The diameter of the watch is 33 mm without the crown. The movement is the 620 cal with 20848991 as the serial number which dates it to 1963. The Vintage Omega Database has this model recorded as 111.0077 as part of the 1962 international collection. If you’d like to know how to authenticate and date your Omega watch, click here.
This Omega De Ville is a front loader. That means that the movement with the dial and hands need to be lifted from the front. In order to do that, I first have to remove the case back.