Vacuum tube logic thing

I'll give this list a shot a something meat I have had for a while - maybe I can get a nice trade. I have a big logic trainer that I would like to move on. It is pretty neat and unique for three reasons: 1) It is based on vacuum tubes. Inside are a number of 12AX7oids that do the work. I think this dates to the very late 1950s. 2) The logic is really odd. It is binary, but the logic levels are not voltage levels, but phases. Hell of a way to run a railroad, in my book. 3) Its Japanese. Yes, Japanese. Apparently part of an early minicomputer project that came out of Japan called Parametron. So what I have is a really odd duck - a Parametron LT-2E, with power supply, spares kit (with spare tubes!), and the reamins of a manual. It is a pretty big desktop unit, but I think I can ship it FedEx ground in a couple of boxes (from 10512). As of now it is untested, but tomorrow I think I might look into powering it up. There is some paint flakage and a little corrosion in the aluminum body, but nothing to scream about. So I am fishing for a trade. A good trade, as I know this thing is worth some real money. What do I like? Big is good, old is good, IBM or Univac is good, but I am open to ideas. I can trade up or down with cash, if we can not quite equal things out. Try me. I'll try to get some pictures shot tomorrow. William Donzelli aw288(a)osfn.org