Thanks! I'll report my findings!
Do you (or anyone else) have information as to the white detailing on the shell and wheels? So far I haven't been able to find any examples of the #570 with the white trim. When I first saw it, I was sure it was s-gauge (until I turned it over), thus my introduction into Gilbert American Flyer O Gauge.
Also, now that I have the loco and tender, I'm looking to see what would have come with this loco. I believe this loco might have been sold as a kit, and I see the references to a freight set (No. 4214 ?), but I can't find details on what specific cars would have been included.
Looking to learn as much as can absorb. I love American Flyer S-gauge, (and HO), but am thrilled to find the older O-gauge items.