This 1970 Chicago IL sticker is for a permit to use certain streets marked for no commercial vehicles in the city of Chicago. It gave vehicles permission to do what the law says they couldn't do.
It has been restored and reproduced directly from an original. It was issued in 1970 and expired in 1971.
It has our patented "Peel and Stick" format that allows attaching to the inside of the windshield
Our thanks to Vance (Vman) , Chicago, IL for providing the original.