I'm getting older and it is time to sell off some or most of my collection.I am in a little different situation. I'm getting older and it is time to sell off some or most of my collection. ATF documents specifically say you can sell your collection but they also specifically say you cannot be doing business with a C&R license. I spoke to two different ATF agents and they admitted some agents are more "enthusiastic" about accusing one of doing business when selling your collection. They don't like it if you are buying guns at the same time you are selling guns. So I have been intentionally avoiding buying guns lately. I have only bought one Colt Officers Model Match revolver in the last year. So I think I am safe to start selling but you really never know if some over-active agent will accuse you of anything. Just because their documents say something doesn't make it very comforting.
I'm in the same situation, and you can always turn in your C&R at any time. And you've always been able to sell your guns to "improve your collection". I don't know how persnickety they'd be about selling your C&R guns to buy modern guns though.