It is unlawful for any Person to exchange, barter, trade or sell at a garage sale the following items of Personal property: Firearms, ammunition, explosives, animals and livestock, any item of Personal property from which the serial number or identifying number has been removed, and any and all other items of Personal property which may be prohibited from being exchanged, bartered, traded or sold by ordinance or resolution of the City, the county of San Diego, or the state of California. (Ord. 1559 § 1, 1974; Ord. 1404 § 1, 1972; Ord. 1218 § 1; prior code § 18.303).