coupon

noun, a detachable ticket entitling the holder to a ration of food, clothing, etc., esp. in wartime (COD)

“Gas was rationed. You had to have coupons. I remember coupons.”

“Sugar, well, it was … maybe the worst when sugar was rationed and tea, coffee. And you had to give your coupons.”

“That went on and rationing too. Probably it didn’t mean much to us because you had your own meat, your own milk and your own butter, but you were supposed to turn in your coupons if you had your own, and we never did.”