The provisions of this chapter and the terms "auctioneer," "apprentice auctioneer," "auction business or business of auctioneering," as defined in Section 34-4-2, shall not apply to and shall not include any person acting as a receiver, trustee in bankruptcy, guardian, administrator, or executor or any such person acting under order of any court, nor shall they include a trustee acting under a trust agreement, deed of trust or will, nor shall they include sales at auction conducted by or under the direction of any public authority or pursuant to any judicial order or decree.