Are you the one that bought it? I had it marked but missed it. I don't think its as old as the seller claimed but more like a late 50's or 60's sign. It had some small damage, so I'll bet it was used but a kind of neat sign though. Probably came out of some upscale station in a big city.
I've never seen one before but I can't imagine that its a phony. You'll have to post a picture of it lit up!