Going by that criteria, experimental, didn't last long, but only 1 unit produced the Pennsy S2 turbine should never had been built. But how many different Lionel versions of it have been made over the years? LOL
I kinda like the look of the dark blue with minimal yellow trim. Definitely different from the ubiquitous red and silver warbonnet scheme.
And you could probably say the same about the New York Central "Century Green" E units, right? As I understand it, the NYC only tried this on two or three diesels. But k-Line's green diesels were popular and MTH I'll bet received more than a few orders for their Premier E-8s that were in this last catalog (well, two orders that I know of for sure...Putnam Division and me!)
- Mike