19(1)The fixing of the common seal of the Compensation Board shall be authenticated by the signature of the chairman of the Compensation Board or some other person authorised by them to act for that purpose.
(2)Sub-paragraph (1) above does not apply in relation to any document which is or is to be signed in accordance with the law of Scotland.
20A document purporting to be duly executed under the seal of the Compensation Board shall be received in evidence and shall, unless the contrary is proved, be deemed to be so executed.