I think I found somethin'
 

Brand spanking new Zenith Space Command remotes and a test generator too. What could they be worth?

Those would probably bring a lot on eBay, since people like to use them as "display items" (Kind of wasteful in my opinion). That red "tester" remote is probably worth a lot, since I believe that is one of the first Space Command Designs.
There are people who know a lot more about these than me on this group...I'm just sharing what I know about them on eBay...

I'm of that camp anymore too, if it doesn't get used move it. Although I've got quite a few hifi peices around here in the "what if reserves" catagory.

I remember seeing that tester remote style on ebay not more than a year ago. It went for like 170 or something. The styling is first generation space command 200 (1956)