NEC Color Graphics Board for early multi-synch

I've been reading the various threads with some interest for the past few weeks. I've been working in the field since the mid-80's, but no programming experience, sadly. I have always been an equipment junkie, and something of a packrat. Which leads to this: can someone make use of an early NEC Multisynch Color Graphics Board (GB-1)? It is complete with a daughter board containing a Z80, and the memory appears to be fully populated. Also have the manual and a copy of Dr Halo with manual. Three disks (51/4 naturally) appear to have all the files. It's a full size board, with Tseng processor chips. I'd like to get a few bucks for the lot, to pay for storage, or whatever. Mailing would be from MA. The board has the nine pin connector people here have mentioned, in addition to two "reserved" jacks. Manual is quite complete, with pinouts, etc. The daughterboard is the CMII, which gave the board full Hercules compatibility. Unfortunately, the unit is untested, as I have no equipment available to try it out. Any sale would be as-is. Interesting item, and I bet it was expensive. Also have an Imagraph SCGA6 board with matching cable and manual. Anyone know what this was used with? If I ever knew, have forgotten... Harry