Mystery Coupon

I found this coupon in my driveway today. I was only 11 years old in 1991. I was not a old enough to cook and I KNOW I was not clipping coupons.... LOL. Where did it come from?? I am not sure, but it made me think of my Grandma Hazel. She was always clipping coupons and cutting out recipes to send to me. She never threw anything away because someone might need "it" someday. She was always thinking of others. I love and miss her so much.