I don't keep things I don't use. I've told this story a time or two but it needs repeating...
One of my good friends is a fairly wealthy individual, we hunted and shot together a lot in the 80's. He had some really nice firearms. His pride and joy (at that time) was an unfired 1920's vintage CE grade Fox 20 gauge double, it still had the hanging tag on it. Worth about what you would pay for a new Honda Accord. I asked him what was he planning to do with it? He looked at me for a minute, then said, "you know, who am I saving it for?" We drove to a gunmaker that specialized in vintage doubles (long out of business now) and in checking the chokes found it was not Mod and IC but both barrels were Mod. He had it bored to the correct chokes and used it on a quail hunt some months later. It was a great little gun, it would have been a travesty to let it sit in a case for another 60 years unused.