Check with Universal Radio if you are thinking of possibly selling it.
They seem to get top dollar for hard-to-find transistorized SW radios. They have a historcal listing of what their used radios have sold for including details and good pictures. There are not JVC radios listed, so it is tough to tell from that. Is it possible that it is a re-branded model from another manufactuer like kenwood, Panasonic(national) or maybe even magnavox?
I have a 1994 Passport to the world at home, so if it was avaliable in the early 90s it would be in there. I'll check it tonight.
What does this radio have for features? can you post pics of it?