I've started to wear my dad's vintage Omega Seamaster. I'd like to ID it so that I am able to figure out what size strap to get. I believe the size of the face is 34mm.
Also, my dad hasn't worn this for decades. I was able to wind it up fine manually, and it's supposed to be automatic so hopefully I won't have to handwind it again anytime soon. Should I go and get it checked out by a watch repair store to see if it needs any work?
I am pretty new to watches so sorry in advance if I am asking any particularly dumb questions!