Hi,
There is a lot with IBM circuit boards on
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=58&t=18960
I don't know if there is any value for collectors but I thought I would
pass it along.
It isn't my cards but if I manage to broker a deal I get a kickback...
remember mention me if you buy the collection.
:-D
Date codes I see on the IC:s range between 1974 and 1982.
G?ran