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.
Those are from a mix of machines. The one with the small aluminum
heatsinks all over the board is an S/38 processor, I think.
--
Will