I have had only one opportunity to examine a 3 rail American Flyer prewar O gauge set. I finally found the pics.....it was in late 2015. Really nice stuff.....the "might have beens" are always interesting to consider.....
Here are the pics.....note the zinc rot on the steamer.....
The red Christmas bulb simulating the firebox is a nice touch.....
Have a great weekend folks......
Peter