According to the Association of Coupon Professions, only three states require this declaration of redemption value: Indiana, Utah, and Washington. Since many coupons are designed for national distribution, though, the redemption value ends up printed on all of them. As with the old trade stamps, it doesn’t really matter how infinitesimal the stated value is as long as it’s not zero. Thus, you see coupons that are worth 1/10th, 1/20th, or 1/100th of a cent.