A person who possesses, sells, or offers for sale a weapon commonly known as a "zip" gun, or a weapon commonly known as a switchblade knife, the blade of which is three inches or more in length, shall be imprisoned not more than 90 days or fined not more than $100.00, or both. (Added 1959, No. 151, eff. May 5, 1959; amended 1981, No. 223 (Adj. Sess.), § 23.)