No person shall exhibit for sale, exchange, gift, or any other purpose, in any showcase, show window, or other place, exposed to public view, any dagger, Bowie knife, stiletto, butterfly knife, switchblade knife, or other knife or instrument which opens by hand pressure applied to a button or other device in the handle of the knife or by operation of inertia, gravity, or both, throwing stars, or any other martial arts weapon, brass knuckles, or knuckles of lead, brass, or other metal or materials; or display any sign, poster, cartoon or card, suggesting the keeping for sale, exchange, or gift of any of the above described articles. Nothing in this section shall be deemed to prohibit the display of such articles for educational or historical purposes.