Penn Central

[nachoman]

Interesting that the trade-in value was greater than what the D&RGW was selling them for. That makes me wonder why the Rio Grande did not trade them in themselves. Does anyone know how long they remained on the PC roster? I was under the impression that F-units were mostly gone by the early 1970s. I can only remember seeing one F-unit in regular service, and that was somewhere in Mississippi or Louisiana in the mid-1980s (and even then I am not certain it had not been converted into some kind of road slug).