So I have a bunch of cable wire but I haven't botherd bringing it in till I figure out if its worth stripping or not,it looks like a nice solid piece of copper wire in the middle of it, but wen I cut it the middle of the wire is a silvery color, is it just copper coated or wats the deal with it,nd should I bother stripping it nd if I do wat price will I get for it nd wat will I get if I don't,I'm talkin about cable wire for like tvs nd stuff not the wire that has the plug end but the stuff that has the circular ends