I'm not sure that you'll get a very warm reception on this mailing list. The people here mostly collect *systems* (some of which contain core memory), and are somewhat devoted to keeping the systems running rather than parting them out. On the other hand, no one probably objects too much to collecting core memory that has already become separated from a system through no fault of the collector. But I'm certainly not selling any core memory out of my PDP-8s or PDP-11s, except maybe to another PDP-8 or PDP-11 user, and they'd have to twist my arm pretty hard to make that happen. Cheers, Eric