The provisions of this part shall not apply to or affect the following persons:
(1) Persons acting pursuant to an order or process of a court of competent jurisdiction.
(2) Persons acting in accordance with their powers and duties as public officers such as sheriffs and marshals, and similar public officers.
(3) Duly licensed auctioneers, selling at auction.
(4) Persons holding licenses or permits duly issued to conduct such sales by municipalities having municipal ordinances similar to this part.