Okla. Stat. tit. 21, § 21-362: Vendors crediting, furnishing, etc. for personal use

It shall be unlawful for any vendor selling to the State of

Oklahoma to credit, furnish, distribute, transmit or supply to any

person or persons, firm, company, or corporation, for personal use,

any trading stamps, coupons, tickets, certificates, cards or similar

devices, which are redeemable either for money or any products,

goods, wares, articles, merchandise or any other items of value, in

all cases wherein the basis for said credit, issuance, transfer,

assignment or distribution results from the sale of any products,

goods, wares, articles, merchandise or any other items of value

whatsoever to the State of Oklahoma.