Marking of Country of Origin on U.S. Imports; Customs Pub. No. 539

Department of the Treasury U.S. Customs Service

Special Markings on Certain Articles:

The  following  articles  and  parts  thereof, unless  otherwise  subject  to  the marking  exceptions   provided  for  in Section 304 of the Tariff Act, must be   marked   legibly  and  conspicuously  with   their  country of  origin  by die-stamping,  cast-in-mold  lettering, etching (acid or electrolytic), engraving, or by means  of  metal plates  which  bear the prescribed marking and which are  securely  attached to  the  article  in  a  conspicuous  place  by  welding,  screws, or rivets:

Knives,  forks,  steels , scissors,  safety razors,  blades for  safety razors, surgical   instruments,  dental  instruments,  scientific   and   laboratory instruments,  pliers,  pincers,  nippers and hinged hand tools for holding and   splicing  wire ,  vacuum   containers    and    parts  of  the   above articles.