Wow. That is bizarre. I’m emailing some people at the Air & Space Museum to see if they have any idea.
JEDIT: One of the curators got back to me and basically “Yup that is weird” but he didn’t know anything more. Not sure if any of the others I emailed will reply, but he did suggest talking to, you know, people who built the prop. That’s a good idea, I just have no idea where to start. Or finding out if the prop still exists today.