Fake. Edit: Just to get detailed. Omega never added antimagnetic to the dial. The fonts used in the indices have never been seen on an Omega. The back of the case never has information on it, that info is on the inside. It is steel, why would it be hallmarked as 18kt gold? Again, this watch doesn't resemble anything in Omega's catalog.
I'm going to go with fake, based purely on first impressions and no knowledge of the supposed model. I await the real experts getting detailed!
Look through this link and tell me what you think about your watch. https://omegaforums.net/threads/ple...it-item-s-and-seller.7699/page-72#post-766428 See any similarities?
It's not mine, but my grandmother gave it to my sister. I'm Just a bit confused because of the 18k. The wristband shows also 18k 0.750.