As used in this chapter, the following terms shall have the meanings indicated:
A person, firm or corporation engaged in the purchase, sale or barter of old iron, steel, chain, aluminum, brass, copper, tin, lead or other base metals, belting, wastepaper, old rope, old bags, bagging barrels, piping, rubber, glass, empty bottles and jugs of all kinds and quantities of less than one gross, and all other articles discarded or no longer used as manufactured articles composed of any one or more of the materials hereinbefore mentioned.
A person, firm or corporation engaged in the business of selling, exchanging, dealing in or dealing with secondhand articles, including but not limited to firearms, opera glasses, telescopes, watches, clocks, diamonds or other precious metals, jewelry, furs, fur coats, or other kinds of wearing apparel, antique furniture, furnishings, glass and dishes, musical instruments, radios, automobile accessories, office and store fixtures and equipment, gas and water meters, and all classes of fixtures and their connections. For purposes of this definition, yard sales, flea markets, garage sales, attic sales or a similar commercial activity established as a business for the sale of other people's property as described in this chapter or such a sale that exceeds three days' duration or is held more than three times a year shall be considered a secondhand dealer. In the event any such articles are taken in trade for another or similar article by a retail or wholesale establishment, such transactions shall not be considered as coming within the requirements of this chapter.