Hi all. I have my great-grand-father's colt .38 revolver and I was wondering what it is worth. No. I don't want to sell it... ever. But if it actually is worth anything (to others/possible thieves), I want to included it in my insurance, and I would like to find a source that my insurance company would recognise as authoritative. Is there a site that is well respected in the industry of some ""blue book" that I can buy? If so, which one? thanks.