Peemacgee
··Purrrr-veyor of luxury cat box loungersI feel that the risk is limited in terms of the watch not being original, but Omega would need to provide an official response for there to be zero risk...
It's certainly not the ultimate version for collectors, but it seems to me to be a beautiful vintage watch with an unpolished case in very good condition. So I'm going to take a chance on it.
You could always contact Omega - advise them of the discussion and give them the serial number and ask the question - you never know, you could get lucky and receive a response.
It's a very nice watch - you should enjoy it regardless of its provenance.