One of these
John;
Don’t know whether Bachmann ever did their Davenport in Pennsy livery, but it may be worth a try. The lines of both locomotives are pretty similar.
Regards, David Meashey
I did a search and didn’t find a Pennsy. It looks like they were just painted different colors.
John;
I also have the Aristo shorty switcher (I call it an RS-3/8), but that switcher is in Brunswick Green livery, If you must have Tuscan passenger livery, it’s a no-go. I’m sure these locomotives may pop up on the second-hand market from time to time. The switcher shown below is a Hershey version.
Happy Hunting, David Meashey
Sorry out of stock 
Yeah, them and Trainz were the first places I checked.
Nicolas Smith Trains in South East Pennsylvania may have one. They have a web site, not everything listed, especially the used items.
Phone 610-353-8585 Maybe worth a phone call. It is a cool store to visit!