I've got a 4x5 glass plate negative carrier I'll send you if you want it for your collection! I certainly can't use it. It looks unused.
Actually, I'll trade it for a round lens board that fits on a cone if you have one. But I think I need Copal 1. It is for a B+L lens I bought here on apug from someone. I'll have to measure the lens as I'm not sure if it is Copal 1 or not.