Jerry, that's a very interesting comm panel. I suspect it is basically just a collection of switches, previously labeled to coincide with the audio I/O from radios (long removed) that they were originally controlling. Apparently each of two crew members had full and separate individual access to everything on board. There may be mic and audio preamps installed to impedence match aviation headsets to non-aviation specific radios, and perhaps separate audio amps for each radio (not usually needed with today's navcom abilities). While new versions may still go for $4k new retail, it would have a very limited market, mostly in law-enforcement, forestry service, fish and game, etc., and most agencies only buy "new" equipment when available and needed.
A few pilots who happen to be ham radio operators might be interested, but could probably build or modify simpler and smaller versions specific to their personal needs. Truth is, for what this panel actually does, it probably wouldn't be worth more than a hundred dollars or so on the used market... even IF you can find that one interested buyer out of many thousands. Just my opinion!
