A few other possible places to check:
http://pages.map.com/dandt2/techno/tecnofosl.htm (this one is not even 1 year old, but who knows what they do for you.
If you are looking for a newsgroup:
http://www.audioasylum.com/
They do not accept advertising in the forum, but you might find some leads there.
A links page you might have some luck at:
http://www.soundpractices.com/links.html
Your item is unique, and certainly there are a number of collectors out there, but unless you have a small sound studio, there is not much usefulness in the home of an average owner of a vintage stereo system, let alone the newer.
I hope these help, even though they are a little bit late.
: I have one in the box with signed documents from Tauscher and e.h. scott. It's pretty cool.I was an avid collector until I had my children and 2 business's.I'm going to reduce my radio collection and am trying to sort out what to keep regarding historical signifigence only. thanks for your help.