No Joe, what I mean is, up to 1960, all the London/Brunswick/RCA/Vogue demos came as two one sided discs, as a pair, so you need to have both the A side disc and the B side disc, but over time, they got split up and you usually only ever find one of the sides. To really be able to say you've got the demo you have to have both sides, but yeah I do it to, sell things as one sided demos, I've got a few orange London ones, Bobbettes etc.