Here's somthing to spend the rest of your life searching for. Just re-reading a couple of pages out of the Beatles Recording Sessions book and I came to the section about their new Savile Row Apple studios. The infamous Magic Alex console "made out of bits of wood and an old oscillascope" actually did pass signal according to everyone's comments, just not very well. According to Geoff Emerick, it was sold off to an Edgeware Rd second hand electronics shop for 5 pounds.
I figure an easy six figure reserve on Ebay and thats before somebody gets the bright idea to cut it up into modules suitable for rack mounting!
You know this thing is sitting in some basement somewhere. Come to think of it, I did see something similar at a junk shop on the Portabello Rd back in the mid eighties........

steve
http://home.pacbell.net/sjp/