No person shall place any advertising display unless there is securely fastened upon the front thereof an identification number plate of the character specified in Section 5363. The placing of any advertising display without having affixed thereto an identification number plate is prima facie evidence that the advertising display has been placed and is being maintained in violation of the provisions of this chapter, and any such display shall be subject to removal as provided in Section 5463.
Ca. Bus. and Prof'l. Code § 5362