13The application of the seal of the Corporation shall be authenticated by the signature of the secretary of the Corporation or of some other person authorised, either generally or specially, by the Corporation to act for that purpose.
14A certificate signed by the secretary of the Corporation that an instrument purporting to be made or issued by or on behalf of the Corporation was so made or issued shall be conclusive evidence of that fact
15Every document purporting to be an instrument made or issued by or on behalf of the Corporation and to be duly executed under the seal of the Corporation, or to be signed or executed by the secretary of the Corporation or a person authorised by the Corporation to act in that behalf shall be received in evidence and be treated, without further proof, as being so made or issued unless the contrary is shown.