Every licensee shall:
(a) Post and maintain the license upon the licensed premises in a place where it may be seen at all times;
(b) Carry the license on his or her person when he or she has no licensed business premises;
(c) Affix any insignia delivered for use in connection therewith upon the outside of any coin, vending or other business machine or device, so that it may be seen at all times;
(d) Not allow any license, special permit or insignia to remain posted, displayed or used after it has expired or when it has been suspended or revoked; and
(e) Not loan, sell, or assign to any other person, or allow any other person to use, display, destroy, damage, remove, or have in his or her possession, except as authorized by the License Officer or by law, any license or insignia which has been issued to the licensee.
(1977 Code § 9-123)