Act 16 Land Act 1998 53. ( 1) The common seal of the Commission shall be authenticated by the signature of the Chairperson or of some other member authorised by the Commission in writing, and the signature of the Secretary. Authentication of common seal, etc. (2) Any order or decision of the Commission shall be in writing and signed by( a) the Chairperson; or (b) any other member duly authorised by it in writing; and ( c) the Secretary. (3) Any instrument or contract, other than an instrument which does not require to be under seal, may be entered into and executed on behalf of the Commission by any member or agent duly authorised in writing by the Commission for the purpose. (4) Any document presented in evidence as(a) an instrument executed or issued by the Commission and sealed with the common seal of the Commission and authenticated in the manner prescribed in subsection (1) of this section; (b) an order or decision of the Commission and signed in the manner prescribed in subsection (2) of this section; or ( c) an instrument or contract of the kind referred to in subsection (3) of this section and entered into and executed on behalf of the Commission in the manner prescribed in that subsection; shall be received in evidence and be presumed to be so executed, so signified and entered into on behalf of the Commission without further proof unless the contary is shown. 54. For the purpose of performing its functions under the Constitution and this Act, the Comntission may57 Powers of the Commission.