Ala. Code § 16-16B-4
The Bonds shall be signed by the president or vice-president of the Authority, and the seal of the Authority affixed thereto (or a facsimile thereof imprinted thereon) and attested by its secretary. All signatures of the president, vice-president, and secretary may be facsimile signatures if the Authority, in its proceedings with respect to issuance, provides for manual authentication (which may be in the form of a certificate as to registration) of the Bonds by a trustee, registrar or paying agent or by named individuals who are employees of the State and who are assigned to the Finance Department or State Treasurer's Office of the State. All Bonds bearing signatures or facsimiles of the signatures of officers of the Authority in office on the date of signing thereof shall be valid and binding notwithstanding that before the delivery thereof and payment therefor, any officer whose signature appears thereon shall have ceased to be an officer of the Authority. The Bonds and the income therefrom shall be exempt from all taxation in the State of Alabama, may be used as security for deposits, and shall be eligible for investments of fiduciary funds, as provided in the 1965 Act. The Bonds shall be construed to have all the qualities and incidents of negotiable instruments subject to any registration provisions pertaining to transfers. The Authority and the Bonds shall be exempt from all laws of the State governing usury including, without limitation, the provisions of Title 8, Chapter 8, or any subsequent statute of similar import. The Bonds shall be in such form or forms and denomination or denominations and of such tenor and maturities, shall bear such rate or rates of interest payable and evidenced in such manner, may be made subject to redemption prior to their maturities, and may contain provisions not inconsistent with this chapter, all as may be provided by the resolution of the Authority under which the Bonds may be issued; provided, that no Bonds shall have a specified maturity date later than 20 years after their date; and provided further, that those Bonds having maturities more than 10 years after their date shall be subject to redemption at the option of the Authority on any date on and after the tenth anniversary after their date at such redemption price or prices and under such conditions as may be prescribed in the proceedings of the Authority under which they are issued. For the purpose of paying the principal of, premium, if any, and interest on the Bonds or any Refunding Bonds, the Authority shall designate the State Treasurer or such bank or banks as the Authority, in its discretion, determines to be appropriate and desirable. Funds for the payment of debt service shall be transferred by the Authority or the State Treasurer on behalf of the Authority to the designated paying agent on the actual due date of such principal, premium, if any, or interest.
Ala. Code § 16-16B-4 (1975)