My first set was a second-hand Flyer Mountaineer set from the late 1950s. The Old Man got it for me one Christmas when I was about six or seven. He was disgusted with it because the locomotive had a plastic boiler (he was all about metal). No matter to me, I ran the bejeebers out of that set. Still have most of it (except the caboose...somehow managed to lose that by the time I got to high school). Here's the Flyer 283 that headed the set:

Flyer was always a bit quirky if you let it sit around for a long spell without running it. Wonder if this bad boy would turn over...
Now I've started messing around with Flyer prewar O...just as contrary as the postwar stuff.
Healey