No person, except as provided in this section, shall knowingly buy, receive, keep, dispose of, destroy, throw away, sell, exchange, offer for sale, or have in his possession any hubcap of a motor vehicle when any distinguishing or identifying mark, name or number placed on said hubcap or any portion thereof has been altered, defaced, obliterated or destroyed, unless a report of such fact is duly made to the police department of the city if said person is a resident of said city or such hubcap is generally kept or maintained in said city. (Prior code § 10.30.030)