Ala. Code § 41-9-353
All obligations incurred by the commission and all bonds issued by it shall be solely and exclusively an obligation of the commission and shall not create an obligation or debt of the State of Alabama or any county or municipality therein.
All bonds issued by the commission, while not registered, shall be construed to be negotiable instruments even though they are payable from a limited source. All coupons applicable to any bonds issued by the commission, while the applicable bonds are not registered as to both principal and interest, shall likewise be construed to be negotiable instruments although payable from a limited source. Such bonds shall constitute legal investments for savings banks and insurance companies organized under the laws of the state; and, unless otherwise directed by the court having jurisdiction thereof or the document that is the source of authority, a trustee, executor, administrator, guardian or one acting in any other fiduciary capacity may, in addition to any other investment powers conferred by law and with the exercise of reasonable prudence, invest trust funds in the bonds of the commission.
Any resolution authorizing any bonds under this article shall contain a recital that they are issued pursuant to this article, which shall be conclusive evidence that said bonds have been duly authorized, notwithstanding the provisions of any other law now in force or hereafter enacted or amended.
Ala. Code § 41-9-353 (1975)