The judge before whom any person is tried for a violation of any provision of the preceding section may, in his discretion, upon the conviction of the accused, order the forfeiture of the air gun, “BB” gun, pellet gun, cannon, air- or gas- propelled air rifle, sling shot, or bow. Such forfeited device may be destroyed by the police department or sold and the proceeds placed in the general fund of the city. (Ord. No. 535, § 2; Ord. No. 1194, § 2(B).)