In this subtitle the following words have the meanings indicated. “Consumer” means a person who buys for his own use or for the use of another but not for resale. “County” includes Baltimore City. “Person” includes an individual, corporation, business trust, statutory trust, estate, trust, partnership, association, two or more persons having a joint or common interest, or any other legal or commercial entity. “Secondhand watch” means: A watch or the case or movement of a watch which has been sold previously to a consumer; or Any watch of which the case or movement serial number or other distinguishing number or identification mark has been erased, defaced, removed, altered, or covered. “Sell” includes exchange or offer or display for sale or exchange.