Is There A Market For Vintage Shells?

[ryanmcb]

I don't post much but I have a question.
I have a truck that has a vintage shell (Gem-Top). I was just wondering if there is a market for these things for people trying to keep a period look. Looks like all aluminum, wind out windows, locking handle with key. oh yeah, this thing is near mint, seriously. Been in a garage it's whole life.
Anyway, as I lifted off the truck and put it in the shop I wondered if people want these things and didn't know who else to ask but truck guys.

One more question. I found it interesting that it has camper registration tags. It looks like just a topper to me. I really don't think I would have to register anything like this in my state. Is that pretty common elsewhere to register a shell?