Whoever, being an officer or employee of the Postal Service, acts as agent for any lottery office, or under color of purchase or otherwise, vends lottery tickets, or knowingly sends by mail or delivers any letter, package, postal card, circular, or pamphlet advertising any lottery, gift enterprise, or similar scheme, offering prizes dependent in whole or in part upon lot or chance, or any ticket, certificate, or instrument representing any chance, share, or interest in or dependent upon the event of any lottery, gift enterprise, or similar scheme offering prizes dependent in whole or in part upon lot or chance, or any list of the prizes awarded by means of any such scheme, shall be fined under this title or imprisoned not more than one year, or both.