My father has an old shotgun made by the Stevens company in chicopee falls that has seen better days. The stock is broken almost where it attaches to the gun and there is surface rust all over. It needs some tlc from a gunsmith for the mechanical parts and possibly some sort of blueing. The stock needs replacing as it is beyond help. i think it fell off the wall once where it was mounted. Is there some intrinsic value that will be removed if it is fixed or are these fairly common guns?