I had spied a nice little Cyclone when I was in yseterday, but figured I'd wait...Mistake! When I was back today, she was gone . Anyway, I went back to digging through the drawer of derailleurs, and found an old Shimano, a newer Shimano 600, and another Shimano (all made in Japan) before stumbling on this guy. The guy sold it to me for $8 and told me it just needed a cleaning and that she was "gorgeous" - definitely worth it, considering any of the Shims would've been the same price!

And the chain is pretty new, so I'll keep it. Thanks for the tip.