15. (1) The Government may, by notification in the official Gazette, make rules to carry out the purposes of this Order. (2) In particular and without prejudice to the generality of the foregoing power, such rules may,ÔÇö (a) provide for the guidance of persons authorised to cut or break coin under Articles 10 and 14; (b) determine the percentage of diminution in weight below standard weight not being less than two percent. in the case of silver coins or five percent. in the case of pure nickel coins, which shall be the limit of reasonable wear; and (c) prescribe the further percentage referred to in clause (a) of Article 11 and the rates at which payments shall be made in the case of coins falling under the same clause.