No sign shall be located on the surface area of a mall except when its location has been specifically authorized in a permit for a special event issued in accordance with Article III of this chapter. A sign shall mean and include every advertising message, announcement, declaration, demonstration, display, illustration, insignia, surface or space erected or maintained in view of the observer thereof for identification, advertisement or promotion of the interests of any person, entity, product, event, or service. Any sign placed on a mall in violation of this section shall be summarily removed by the city and stored at its corporation yard for a period of ten (10) days and unless sooner claimed by its owner shall thereafter be disposed of by the city. (Prior code § 51.04.403)