Maybe I'm just naive. I jumped when Walther's offered the Phoenix Fuel kit (probably late 90s). I never really thought about the prototype. The built-up kit is a fixture on our modular layout.
Fast forward to 2017 when I was collecting my pictures for my NYO&W anniversary thread.
Here is a picture of Middletown yard about 5 weeks before the O&W closed.
It sure looks like Phoenix Fuel there on the right!
Peter