Section 515.536 - Certain transactions with respect to merchandise affected by Section 515.204(a) The purchase outside the United States for importation into the United States of nickel-bearing materials presumptively subject to § 515.204 and the importation of such merchandise into the United States are authorized if there is presented to the collector of customs in connection with such importation the original of an appropriate certificate of origin as defined in paragraph (b) of this section and provided that the merchandise was shipped to the United States directly, or on a through bill of lading, from the country issuing the appropriate certificate of origin.(b) A certificate of origin is appropriate for the purposes of this section only if (1) It is a certificate of origin the availability of which for Cuban Assets Control purposes has been announced in the FEDERAL REGISTER by the Office of Foreign Assets Control; and(2) It bears a statement by the issuing agency referring to the Cuban Assets Control Regulations or stating that the certificate has been issued under procedures agreed upon with the U.S. Government.30 FR 15371, Dec. 14, 1965, as amended at 47 FR 4254, Jan. 29, 1982; 50 FR 5753, Feb. 12, 1985; 54 FR 5234, Feb. 2, 1989; 81 FR 71375 , Oct. 17, 2016