Pennsynut; Microscale Decals has O scale PRR passenger decals on page 9 of their O scale offerings. (Link pasted in.) I’ll forewarn they have a $20 order minimum.
http://www.microscale.com/Merc...de=MD&Offset=112
Rob; I’m guessing you’ve already looked as Microscale has Railroad Roman gold, unfortunately not in the extended font you’re looking for.
Curt