Ala. Code § 16-13-92

All warrants issued hereunder shall be executed in the name of the issuing county or city board of education, as the case may be, by the president of such board, shall be sealed with the seal of such board and attested by the secretary of the board. Coupons attached to such warrants shall be executed with either the manual or the facsimile signature of the president of such board. All warrants and coupons attached thereto issued hereunder bearing the signatures of officers in office on the date of the signing thereof shall be valid and binding obligations notwithstanding that before the delivery and payment thereof such officers whose signatures appear thereon shall have ceased to be officers of such board.