209. (1) Subject to the provisions of sections 207 and 208, anything which the owner of any goods is required or empowered to do under this Act may be done by any person expressly or impliedly authorised by the owner for the purpose. (2) Where this Act requires anything to be done by the owner, importer or exporter of any goods, any such thing done by an agent, clerk or servant of the owner, import or exporter of any goods shall, unless the contrary is proved, be deemed to have been done with the knowledge and consent of such owner, importer or exporter so that in any proceedings under this Act, the owner, importer or exporter of the goods shall also be liable as if the thing had been done by himself. (3) When any person is expressly or impliedly authorised by the owner, importer or exporter of any goods to be his agent in respect of such goods for all or any of the purposes of this Act, such person shall, without prejudice to the liability of the owner, importer or exporter be deemed to be the owner, importer or exporter of such goods for such purposes: Provided that where any duty is not levied or is short-levied or erroneously refunded on account of any reason other than wilful act, negligence or default of the agent, such duty shall not be recovered from the agent.