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It's a very over-polished and re-dialed gold top watch, I read it as a ref 2828, from the late1950's with a wrong crown and possibly wrong hand set too. As for value, maybe $150 if you can find someone to buy it?
https://www.omegawatches.com/watch-omega-seamaster-omega-ck-2828
It’s different to the online pics you see because it has been redialled. And not very well.
It is a 2828, follow the link above posted by Christos for details. Your date estimate is about right, I’d put it at 1959 based on the serial number. It’s a mid size model so small even for an era where watches were smaller, the full size fat lug Seamasters were 35mm wide. It’s not massively desirable unfortunately and I concur with the estimate above, I guess it might make $200 if running to an unsuspecting buyer. If you are looking to sell it I suggest eBay, it won’t get much interest here.