(70 ILCS 1815/40)
(from Ch. 19, par. 840)
In case any officer whose signature appears upon any bond or coupon or
check or draft, issued pursuant to this Act, ceases to hold his office
before the delivery thereof to the payee, his signature nevertheless shall
be valid and sufficient for all purposes with the same effect as if he had
remained in office until delivery.
(Source: P.A. 77-1799