Any person violating any provision of this article, whether as principal, agent or employee, for which violation no other penalty is prescribed, shall be guilty of a misdemeanor and, upon conviction thereof, shall be punished by a fine of not less than ten dollars ($10.00) nor more than three hundred dollars ($300.00); and such person shall be deemed guilty of a separate offense for each month during any portion of which any violation of this article is committed, continued or permitted. The existence of any advertising copy on any outdoor advertising structure or outdoor advertising sign or advertisement outside the City limits shall constitute prima facie evidence that such outdoor advertising structure, outdoor advertising sign or advertisement was constructed, erected, operated, used, maintained or displayed with the consent and approval and under the authority of the person whose goods or services are advertised thereon.