Exemption from additional excise duty for goods supplied to UN or qualifying international organisations subject to certificate production. Exempts from additional excise duty and special additional excise duty goods under the Central Excise Tariff when supplied to the United Nations or an international organisation for official use, provided the manufacturer produces, before removal, a certificate from the United Nations or the international organisation certifying such intended official use and presents it to the Assistant Commissioner of Central Excise or Deputy Commissioner of Central Excise having jurisdiction over the factory; 'international organisation' is defined by the Central Government's declarations under the United Nations (Privileges and Immunities) Act.