seller on ebay: alejoelectronic
Many of the vacuum-tube based IBM modules he's selling were widely
available for real cheap in the surplus electronic world in the
late 60's and through the 70's. I bought a few (which were quickly
stripped for their component parts). I probably paid way less than
a dollar per tube module.
How many museums/billioniares are there who can keep, say, an IBM 704
up and functional?
Tim.