18 U.S.C. § 491 — Tokens or paper used as money

Whoever, being 18 years of age or over, not lawfully authorized, makes, issues, or passes any coin, card, token, or device in metal, or its compounds, intended to be used as money, or whoever, being 18 years of age or over, with intent to defraud, makes, utters, inserts, or uses any card, token, slug, disk, device, paper, or other thing similar in size and shape to any of the lawful coins or other currency of the United States or any coin or other currency not legal tender in the United States, to procure anything of value, or the use or enjoyment of any property or service from any automatic merchandise vending machine, postage-stamp machine, turnstile, fare box, coinbox telephone, parking meter or other lawful receptacle, depository, or contrivance designed to receive or to be operated by lawful coins or other currency of the United States, shall be fined under this title, or imprisoned not more than one year, or both.

Whoever manufactures, sells, offers, or advertises for sale, or exposes or keeps with intent to furnish or sell any token, slug, disk, device, paper, or other thing similar in size and shape to any of the lawful coins or other currency of the United States, or any token, disk, paper, or other device issued or authorized in connection with rationing or food and fiber distribution by any agency^* of the United States, with knowledge or reason to believe that such tokens, slugs, disks, devices, papers, or other things are intended to be used unlawfully or fraudulently to procure anything of value, or the use or enjoyment of any property or service from any automatic merchandise vending machine, postage-stamp machine, turnstile, fare box, coinbox telephone, parking meter, or other lawful receptacle, depository, or contrivance designed to receive or to be operated by lawful coins or other currency of the United States shall be fined under this title or imprisoned not more than one year, or both.

Nothing contained in this section shall create immunity from criminal prosecution under the laws of any State, Commonwealth of Puerto Rico, territory, possession, or the District of Columbia.

“Knowledge or reason to believe”, within the meaning of paragraph (b) of this section, may be shown by proof that any law-enforcement officer has, prior to the commission of the offense with which the defendant is charged, informed the defendant that tokens, slugs, disks, or other devices of the kind manufactured, sold, offered, or advertised for sale by him or exposed or kept with intent to furnish or sell, are being used unlawfully or fraudulently to operate certain specified automatic merchandise vending machines, postage-stamp machines, turnstiles, fare boxes, coin-box telephones, parking meters, or other receptacles, depositories, or contrivances, designed to receive or to be operated by lawful coins of the United States.