I own a Union machine tool USN jack knife. It was used improperly, consequently; the bade has some small chips in it. It is a family antique, so I will never use it. Do people restore knifes? If so, would it hurt the "value" of the knife? I know that polishing coin ruins the value. On the other hand, I know that restoring a 70 Baracuda ups the value. I know nothing about knifes. Anybody care to give me there wisdom?