The movement is Omega, the dial looks like it has been redone, and the 18m?serial number date the movement to 1961. The caseback is not Omega. Looks like a pieced together watch from many different watches. Where is it being offered? how much? any more information? Will you ever ask nicely for the experience of members here? Or even take enough time to actually write a post?
It's great! You won't find a better example! Buy it! Now! (but I couldn't resist, because the post was so charming!!)