Voice of Music stuff is not terribly collectable, was pretty mediocre gear (equivalent to RCA, Zenith, etc.). It will cost more to restore it (electronically and cosmetically) than you'd get for it, even if you do the work yourself.
For gear of that age, you'd definitely need to replace any electrolytic caps, rubber parts (mainly, idler wheels), and stylus. Fortunately, I guess, most of the parts are available (there's even a parts company called Voice of Music).