You would have put these on your hat band or shirt pocket "back in the day"
I knew I had this somewhere and just this morning ran across it. Thought you folks would enjoy seeing it as well as g the picture.
I have no idea as to the car, it belonged to a gentleman by the name of John Skelton and was taken in 1976 when the car lived in Des Moines, IA. I had dropped off a rear end for a 56 at his place.