Identification of IBM circuit modules

I picked up a couple of IBM circuit cards today for ~$1.50. The first is about 3.5" x 4.5", has 2 24 pin connectors, 5 of the IBM square metal IC cans and many other components. It has id numbers: 75114 4B01536A1590 VCC The other is 7" x 4.5", has four 24 pin connectors, 6 larger metal IC cans , 9 DIP chips and misc components, it is marked 4161595A2828 VCC13607010 Does anyone know what these do and what system they are from and their approcimate age ? They came in nifty plastic "conductive containers" marked IBM with small windows allowing you to see what is inside. If nothing else they are great examples of IBM technology. Regards, -- Hans B. Pufal : <mailto:hansp@digiweb.com> Comprehensive Computer Catalogue : <http://www.digiweb.com/~hansp/ccc/> _-_-__-___--_-____-_--_-_-____--_---_-_---_--__--_--_--____---_--_--__--_