The gun looks well used but not abused. The checkering is well worn and could use recut, and a the stock refinished to help preserve the wood in future. These guns were very popular here in Ontario. Yours being in .308 was by far the most popular chambering. They are known to be a reliable rifle, far more so than there M-100 brother that is a semi auto version. Don't worry about by refinishing the gun affecting the collector value as it doesn't have any to start with. It is a well carried gun in the most popular chambering which takes it out of the collector bracket.
It appears to be a good solid hunting rifle sans the old scope. Clean it up, shoot it and use it. I would place a value as is without scope at $600 tops, more realistically in the $5's. Like anything it is worth what someone is willing to give for it. The magazines, clips what ever you want to call them are expensive, anywhere from $75 to $100 bucks per depending on condition. I believe they share the same mags with the M-100. So if you have two mags with this gun it adds a little value. Hope this helps a little.