Thanks Tom. So it was located along the old Pennsy tracks that morphed into Conrail then folded into Septa as I see it.
I have (had? I have not seen it in years) a similar ticket dater with a plate that had GREYHOUND (LINES) and PERRYVILLE MD. I suspect that the airlines might have used them in the early years, too. Value is mostly in the brass plate. Note that the ribbon can be refurbished with a little bit of effort.