(1)Where on the importation of any goods capable of being easily identified as such imported goods, any duty has been paid on clearance of such goods for home consumption, such duty shall be refunded to the person by whom or on whose behalf it was paid, if-(a)the goods are found to be defective or otherwise not in conformity with the specifications agreed upon between the importer and the supplier of goods:Provided that the goods have not been worked, repaired or used after importation except where such use was indispensable to discover the defects or non-conformity with the specifications;(b)the goods are identified to the satisfaction of the Assistant Commissioner of Customs or Deputy Commissioner of Customs as the goods which were imported;(c)the importer does not claim drawback under any other provision of this Act; and(d)(i)the goods are exported; or(ii)the importer relinquishes his title to the goods and abandons them to customs; or(iii)such goods are destroyed or rendered commercially valueless in the presence of the proper officer, in such manner as may be prescribed and within a period not exceeding thirty days from the date on which the proper officer makes an order for the clearance of imported goods for home consumption under section 47:Provided that the period of thirty days may, on sufficient cause being shown, be extended by the Commissioner of Customs for a period not exceeding three months:Provided further that nothing contained in this section shall apply to the goods regarding which an offence appears to have been committed under this Act or any other law for the time being in force.