Unmanufactured tobacco without brand name and not retail-packed attracts nil duty; other unmanufactured tobacco attracts 18%. Supplies of unmanufactured tobacco or tobacco refuse that do not bear a brand name and are not packed for retail sale are subject to a nil rate; other unmanufactured tobacco is subject to an 18% duty, effected by substituting and inserting serial entries in the principal notification's tariff table.