In all cases where any dealer in goods or merchandise of any kind subject to either ad valorem or occupation taxes, or both, under the provisions of this Charter, shall, after the rendition of said goods, wares or merchandise for taxation, or after becoming liable for any occupation tax, become or be adjudged bankrupt, or make an assignment of said goods, wares or merchandise, or sell out or transfer the same in bulk, then the assessor and collector of taxes shall at once present to the trustee in bankruptcy, receiver, assignee or vendee of said dealer for payment, a statement of the amount due for said occupation or ad valorem taxes by said dealer, and in case of the failure of the said trustee in bankruptcy, receiver, assignee or vendee to at once pay the amount of said taxes, the said assessor and collector shall, by virtue of his assessment roll, levy upon, seize and sell from the said goods, wares or merchandise, enough to satisfy the amount of said taxes, interest and costs, such sale to be conducted in the manner now prescribed for the personal property under execution; and said taxes, until paid, shall be and constitute a prior lien on all said merchandise, goods and wares in default of the payment of said taxes; and whenever any goods, wares or merchandise shall be levied upon or seized under any writ of attachment or execution, upon which the said city has a claim for ad valorem or occupation taxes unpaid, said assessor and collector shall present for payment to the officer levying said writ of attachment or execution the amount due for taxes, interest and costs on said goods, wares or merchandise, and in case of failure of said officers or of the plaintiff in said writ to at once pay the amount of said taxes, said assessor and collector shall proceed to levy upon, seize and sell enough of said goods, wares or merchandise to satisfy the amount of said taxes, interest and costs as hereinabove provided.