I came across this little model, I believe made by LM Blum. It had already been modified heavily (mostly poorly), so I don't feel bad about re-detailing it and converting it to 3-rail. Here it is before:
...and after stripping...
The details were added rather crudely, with gobs of solder. I was not able to get the offending parts hot enough to loosen them, but a bit of work with a Dremel tool did the trick:
The motor is marked "KTM":
I got a Dallee e-unit, and tested it with leads connected to the motor. It runs incredibly quietly and smoothly - I honestly thought only a can motor could run that well. Next step is to add and wire in contact rollers, and then I can see how it runs on my Ross track. I'll post updates here as I go.