Auxiliary duty exemption limits excess levy on goods exempt from basic customs duty while preserving original exemption conditions. Exempts from the auxiliary duty of customs that portion in excess of the amount equal to 30 per cent of value those goods which are partially or wholly exempt from basic customs duty under the First Schedule to the Customs Tariff Act, value to be determined under section 14 of the Customs Act; application limited to goods covered by the listed notifications and subject to their attached conditions.