It's an interesting bike and almost certainly was not exported to the US. It looks like a typical Japanese housewife's bike. (You should see them riding with an umbrella and a bunch of kids on board) Anyway, there's not much of a collector market in the US for these. My advice is to go ahead and clean it and make it ridable. It will probably be very solid and reliable and collect some interesting comments. I doubt there is much in the way of delicate or lightweight parts on it.