Ok so most have seen the Antiques Roadshow. On there they have experts that seem to know everything about Chippendale Chairs, Dolls, Watches, Swords, Pottery, Marbles, Comic Books, Milk Jugs and everything else under the sun. They also have experts on firearms. I have witnessed one rifle rusty from top to bottom that a guy brought in. Found it behind relatives door. It had a brass plaque that said it was a commorative rifle from Concord Bridge. One of one hundred. The shot heard around the world. They valued it at something like a half a million dollars. I have also watched when a guy brought in a Henry Golden Boy that had a steel reciever instead of a (what is it? brass or bronze). That was valued at quite a lot as well. In all the cases no matter what the collectable firearm they tell the owners not to clean the weapon because that will decrease the value. So my question is why would just cleaning a collectable firearm, and Im not talking about my WWII M1 Garand here, decrease the value? Any thoughts or comments?