Super Trick Cycle Questions

Hello! I have to admit I’m not a unicyclist but I’m hoping you guys can help me out. I’m a teacher for high school at-risk students. When cleaning out a back closet of gym supplies, I can across a pair of these bikes. They are in good working condition and I know nothing about them.

  1. Can anyone tell me anything about them? My Google-Fu is not working on this one, there doesn’t seem to be any info on the web about them other than they are rare. Imported from Germany in the 1980’s? I think?

  2. I don’t even know if I’m asking the right community. Is there a better niche they belong in?

  3. Any idea on a good price? A take-it-and-run price and a fair price? I’ll probably end of selling them and buying different gym equipment. Otherwise they’re going to end up as bumper cars with my students which won’t happen so I’ll probably try to find a better home.

Thanks for any help!