[Code of Federal Regulations] [Title 19, Volume 1] [Revised as of April 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 19CFR18.27] [Page 331] TITLE 19--CUSTOMS DUTIES CHAPTER I--BUREAU OF CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY PART 18_TRANSPORTATION IN BOND AND MERCHANDISE IN TRANSIT--Table of Contents Sec. 18.27 Port marks. Port marks may be added by authority of the port director and under the supervision of a Customs officer. The original marks and the port marks shall appear in all papers pertaining to the exportation. Merchandise Transported by Pipeline