I won’t comment on the watch face and case and movement condition.
I don’t know enough about this calibre but it looks to be in such nice condition for a seventy year old watch that I suspect it’s been case polished and dial refurbished at some stage. Others will be better placed to advise.
However, if you like it and want to buy it and need a valuation to make an offer, my general starting point would be eBay 'Omega cal 265' and check the 'sold listings'.
Personally, I’m not one of those who would never wear a refurbished watch. My approach is generally, if I like it and would enjoy wearing it go for it!
Good luck