72-18-57: Execution of securities and interest coupons.

Except for securities issued in book entry or similar form without the delivery of physical securities, securities shall be executed and signed by the chairman, with the seal of the district affixed thereto and attested by the secretary. Except for any bonds which are registrable for payment of interest, interest coupons payable to bearer and appertaining to the bonds shall be issued and shall bear the original or facsimile signature of the chairman.