306.25. The bonds and coupons issued by the Société shall be signed by the chairman of the board of directors and by the secretary of the Société or, if the latter is absent or unable to act, by any person designated for that purpose by the Société to replace him.
The signature of the chairman or of the secretary of the Société affixed on any bond or coupon of the Société not issued or delivered before these persons cease to act is nevertheless valid and binds the Société.