@PRRronbh posted:The Pennsy never had any Tuscan Red freight engines (including F-Units).
I always considered the Tuscan Red F3 and the Tuscan Red freight Shark as stand ins for the E7 and the passenger Shark for layouts with very tight curves (O-31/36). Coupled with 15/16" passenger cars, they look right for that size.
I also think a F3 or freight Shark in Tuscan Red are not correct for freight, but as they say, it is your railroad. Have fun.