I have a Marlin Model 50. This was an uncles gun that was sold to my father in the late 30's. It was passed to me by my father and used by myself and my sons. We now know it is a very limited edition gun, prototype of the action used by Annie Oakley in her trick shouting. I wander want to know if I refinish the stock will this devalue the gun. It is very chipped and scratched, I just had the action cleaned and have learned it was an action that can be converted from Semi Auto to Full Auto. While I do not plan to do that (only has 7 round clip and later actions clips do not match). I plan to encase in a display case, but would like it to look restored to like new. Good or Bad idea.