CFR > Title 19 - Customs Duties > CHAPTER I—U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY > PART 18—TRANSPORTATION IN BOND AND MERCHANDISE IN TRANSIT > 18.27—Port marks.

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.