Issue of certificates of registration 10. The Board shall issue to the association or institution whose application has been granted by it a certificate of registration in such form as it thinks fit. Use of registered name, etc. 11. Subject to the provisions of section seventeen, an association or institution which possesses a valid certificate of registration under this Act shall be entitled to the sole and exclusive right to use or authorise the use of the name, special name, designation, uniform or badge in respect of which such certificate was issued. Amendment and cancellation of certificate of registration 12. (1) The Board may at any time cause a notice to be served on any association or institution calling upon it to show cause, on or before a date specified in such notice, why any certificate of registration issued to it under this Act should not be amended or cancelled. (2) The Board may, after the said date and after considering any representation made to it by such association or institution, order it to deliver to it its certificate of registration for amendment or cancellation, as the case may be, and may cause any entry in the register to be altered accordingly. (3) Upon receiving any order made under subsection (2), such association or institution shall deliver to the Board its certificate of registration for amendment or cancellation, as the case may be, and upon receiving such certificate the Board may amend or cancel it, as the case may be. (4) Any association or institution which is aggrieved by a decision of the Board to amend or cancel a certificate of registration issued to it under this Act may, within thirty days of such decision, appeal against that decision to the Minister. On such appeal the Minister shall confirm the decision of the Board or shall give such decision as in his opinion the Board ought to have given. Authority to sell or buy registered uniform and badges 13. (1) No person shall sell or give to any person any registered uniform or badge unless he holds written authorisation so to do signed by or on behalf of the association or institution in whose name the said uniform or badge is registered. (2) No person authorised in terms of subsection (1) shall sell any registered uniform or badge to any person unless such person has produced to him before or at the time of such sale a certificate signed by or on behalf of the association or institution in whose name such uniformor badge is registered, stating that he is a person authorised to buy or use such uniform or badge. (3) Any person failing to comply with the provisions of this section shall be guilty of an offence.