(70 ILCS 5/14.4) (from Ch. 15 1/2, par. 68.14d)
    Sec. 14.4. Bonds registered and negotiable. Bonds, whether payable from taxes or from revenues, may be made registrable either as to principal or as to both principal and interest and shall be deemed to be negotiable instruments and shall be executed by the Chairman of the Authority and its Secretary and shall be sealed with the corporate seal of the Authority. The facsimile signatures of the Chairman and the Secretary of the Authority may be used on all bonds and on all interest coupons attached to said bonds in lieu of their actual signatures. In case any officer whose signature appears on the bonds, or any portion thereof, or in facsimile form to any bonds or any coupons attached to the bonds, or any portion thereof, ceases to hold his office before delivery of the bonds, his signature, nevertheless, shall be valid and sufficient for all purposes, the same as if he had remained in office until after the said bonds had been delivered.
(Source: P.A. 84-125.)