1-16E-18. Execution of bonds--Seal. Bonds of the authority may be executed by the manual or facsimile signatures of the board members or officers of the authority authorized by the resolution of the authority to execute such bonds. If such resolution authorizes or directs the affixing of the seal of the authority on bonds of the authority, such seal or a facsimile thereof may be impressed or imprinted thereon. In the event that any board members or officers of the authority shall cease to be members or officers of the authority prior to the delivery of any bonds or coupons signed by them, their signatures or facsimiles thereof shall nevertheless be valid and sufficient for all purposes, the same as if such members or officers had remained in office until such delivery.