Selling things with lots of gold in them... (natsemi)

I've got a Natsemi IMP-16C CPU + memory board [1] here (plus cardframe, circa 1974) that's packed with gold/ceramic chips - I'm considering off-loading it though as it's not relevant to the sorts of things I'm interested in. [2] Question is though, surely if I put it on ebay there's a fair chance that a gold scrapper will get it rather than a computer enthusiast? What do others normally do in such situations (or do they sell elsewhere?) [1] It's in remarkably good condition and likely stands a good chance of working, if someone wanted a fun project (manuals are on bitsavers). Some corrosion to the tops of some chips, but seemingly none to the legs, PCB tracks, IC sockets, other components etc. It's evidently been stored well throughout its life! [2] I *badly* need to thin the collection out a bit and free up some space! cheers, Jules