7The application of the seal of the Charities Board shall be authenticated by the signature—
(a)of any member of the Charities Board, or
(b)of any other person who has been authorised by the Charities Board (whether generally or specially) for that purpose.
8A document purporting to be duly executed under the seal of the Charities Board or to be signed on their behalf shall be received in evidence and, unless the contrary is proved, taken to be so executed or signed.