Hi Fred, the Bomb is about the same condition as your wright bros disc by the looks of the pic. Can't see the edges on yours, but the Ching's taken on a few trees in its day. TBH, I'm not sure it's worth the postage to swap, but if you really want it, I'd consider that Aviar, only because I too like the stamp ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)