27 CFR 41.71: Package.

All tobacco products, cigarette papers and tubes, except as provided in § 41.75, shall, before removal subject to internal revenue tax, be put up in packages which shall be of such construction as will securely contain the articles therein and maintain the notice thereon as required by this subpart. No package of tobacco products or cigarette papers or tubes shall have contained in, attached to, or stamped, marked, written, or printed thereon (a) any certificate, coupon, or other device purporting to be or to represent a ticket, chance, share, or an interest in, or dependent on, the event of a lottery, (b) any indecent or immoral picture, print, or representation, or (c) any statement or indication that United States tax has been paid. No person may purchase, receive, possess (except for personal consumption), offer for sale, or sell or otherwise dispose of, after removal, any tobacco products that are not put up in packages bearing the marks, labels, and notices, as required under this part.