Upon the final conviction of a person accused under Section 9.12.160 the prosecuting attorney of the City shall cause any writing, paper, book, picture, print, design, figure, still or motion picture, photograph or negative thereof, photocopy, engraving, sound recording, card, instrument or other thing which is obscene, or which tends to corrupt the morals of the youth, in respect whereof the accused stands convicted and which remains in the possession or under the control of such prosecuting attorney, to be destroyed. (Prior code § 17-27)