(1) In any legal proceedings a certificate purporting to have been signed by the Minister or the Secretary and to the effect that a specified authority, permission or consent of the purported signatory was or was not given is, without proof of the signature or official character of the person by whom the certificate was signed, evidence of the matter certified.
(2) In any legal proceedings, it shall be presumed, unless evidence is given to the contrary, that any authority, permission or consent of the Minister required before the exercise of a function by the Secretary has been given.