Section 18. Certificate of originof goods issued (but not merely attested) by a recognised Chamber of Commerce,

18. Certificate of originof goods issued (but not merely attested) by a recognised Chamber of Commerce, or by[1] [an Indian or British Consular officer, or by an Indian or British] Trade Commissioner or Agent. 19. Receipt for payment of customs duty issued by a customs authority. 18. Receipt of a Railway or Steamship company granted to a consignor in acknowledgment of goods entrusted to the company for transport. 19. Receipt granted by the Posts and Telegraphs Department.