I found one on a Russian auction website of all places, but no real details. Also, here is a LINK to a token collector's webpage where he references this as being a token from Illinois.
P Ry Co. - Pittsburgh Railway Company. Established 1902.
I find part of that phrase in the Electric Railway Journals from 1916 & 1917. The page shows a "Patriotic & Safety" pamphlet published by them. At the bottom it says "Keep your safety always in mind."
This is a bit of speculation but the the token could be a souvenir from "Safety Week" sponsored by the P Rys Co. in October of 1922.
There is a multi-page article in the 1922 - 23 American Electric Railway Association (AERA) magazine which describes the event. It seems no expense was spared...