Nothing in this chapter shall be construed to prohibit the shipping, sale, possession and use of fireworks for public displays; and such items of fireworks which are to be used for public display only and which are otherwise prohibited for sale and use within the city shall include display shells designated to be fired from mortars, display set pieces of fireworks classified by the regulations of the Interstate Commerce Commission as “Class B Fireworks,” and shall not include such items of commercial fireworks as cherry bombs, tubular salutes, repeating bombs, aerial bombs and torpedoes. (Prior code § 2-3-54)