Questions in respect of goods deemed to be dutiable
29.—(1) If any question arises as to whether any particular goods are or are not included in a class of goods appearing in an order made under section 10(1), such question shall be decided by the Director-General.
(2) Any certificate purporting to be signed by the Director-General stating his decision under subsection (1) shall be admitted in evidence without proof of signature for the purpose of any proceedings under this Act.