This C Gas Ration sticker was issued in 1942.
See the full description under the A sticker
Gas and tires were being rationed for the war effort.
The C sticker was issued primarily to professional people, physicians nurses, dentists, ministers, priests, Mail delivery, embalmers, construction or maintenance workers, Soldiers and armed forces going to duty, and several others.
It has a tab under the "C" for the individual to check his occupation. There are 17 different occupations for this sticker. In reality this one was more used than the "A" sticker which is pretty much mostly seen today simply because it was issued to more people. Immediately after the war it was quickly scraped off the windshield as it revealed the exact occupation of professional people who did not wish their occupation revealed on their cars.
This is a reproduction, far superior to the originals. This sticker has a peel and stick backing sheet on the front so you can peel it off and stick it to the inside windshield of your classic car.
The paper and ink quality is one that you will want on your expensive restored vehicle.