7.— (1) The seal of the Board shall be authenticated by—

(a) the signature of the President of the Board or another member of the Board authorised by the Board to act in that behalf, and

(b) the signature of an employee of the Board authorised by the Board to act in that behalf.

(2) Judicial notice shall be taken of the seal of the Board and, accordingly, every document—

(a) purporting to be an instrument made by the Board, and

(b) purporting to be sealed with the seal of the Board authenticated in accordance with subsection (1),

shall be received in evidence and be deemed to be such instrument without further proof unless the contrary is shown.