ADVERTISING SIGN OR STRUCTURE: Any cloth, card, paper, metal, glass, wooden, plastic, plaster, stone sign or other sign, device or structure of any character whatsoever, including a statuary, placed for outdoor advertising purposes on the ground or on any tree, wall, bush, rock, post, utility pole, fence, building or structure. The term “placed” shall include erecting, construction, posting, painting, printing, tacking, nailing, gluing, sticking, carving, or otherwise fastening, affixing or making visible in any manner whatsoever. Neither directional, warning nor other signs posted by public officials in the course of their public duties shall be construed as advertising signs for the purpose of this Ordinance.