It does look to be a 1950 Russian model 45 SKS at first glance. It is what they call a Heavy Refurb due to the coating (commonly called BBQ paint) on the action and bolt carrier as well as the raw metal rear sight leaf and xxx-out SN on the stock. Basically re-arsenaled in Russia before export to the US. Very clean and nice rifle though and definitely something to keep. Worth probably $750 minimum on up to $1000 depending on the day, location, and method sold.