Madison,
It depends on what sign you have. There are two versions of that sign. Most of these signs came from the PRR and look like this.
Mine is the other version and looks like this. I was told it came off a trolley line near Philadelphia.
There are two ways to tell the difference. First is the lettering style and spacing. The other is that on the PRR sign, there are two holes near the bottom. This was for a strap bracket that was mounted on the back of the sign which went around the pole for additional support. All PRR signs were painted white and black.
