I don't know anything about these watches, my grandfather gave it to me.

Seamaster, automatic, 32 stainless steel 1329/313

 

This will help you get the answers you seek.
https://omegaforums.net/threads/vintage-omega-posting-guide.383/

 

And to add: It does not hurt to say "hello", "please" and "thank you"

 

Maybe the OP is a member of the "Me Generation".

 

It would help if you take it to a watch repair shop and have them remove the back and take pictures of the inside case back and movement. Then post them. That way we can help.

 

I apologize Sir