Fabulous little set, Don. I'm a great fan of the low-end sets, as so few of them seem to have survived intact.
Here's a little Hafner Overland Flyer acquired in the last year:
A shelf queen for now, as the spring is broken. I bought a copy of James Pekarek's book on windup repair, so hopefully I can sort it out (although I hear Hafner is not easy). A partially broken pilot, but otherwise in nice cosmetic condition.