Does this omega look legit? If so do you know when it was made? I think it may have been made in 1970

 

If you've got a picture of the movement and case back that'll help greatly in determining the watch's authenticity and age.

 

The Seamaster marked caseback doesn’t go with the Geneve dial. You’d need to post pics of the movement to determine if the dial or caseback are replacements and whether the movement is original.

 

Incorrect.

A number of Genève models came with Seamaster marked casebacks.

 

You’re right... the topic was discussed here:

https://omegaforums.net/threads/advice-omega-genève.68096/#post-854893

 

The answer to "does it look legit" is Yes, assuming the movement is ok. It's probably a calibre 601. Your guess on the date is about right, maybe a year or two earlier. Looks a decent enough example from those pics. Value in the UK about £300-350.

 

With that case and dial id value it more at £250.

 

Yep