In this connection, after facing up to the serious question "what's going to happen to my stuff when...?"*, I have made up a little folder for each of my guns, so that a person without specialist knowledge can see what they are and what they might be worth (copies of concluded auctions, not pie-in-the-sky asking prices). The folders also include load information and specimen targets for those items which are useful shooters.
*Not if, but when - it will happen one day!