The appropriate officials of the Bureau of Customs are hereby authorized and designated as the officers who shall perform such administrative duties in connection with the summary forfeiture of gold seized by the Secret Service, the sale or other disposition of such gold, and the remission or mitigation of the forfeiture of such gold, as may be necessary or proper by virtue of the provisions of the Gold Reserve Act of 1934 and the Gold Regulations, and by virtue of the provisions of the customs laws which the said Gold Reserve Act makes applicable in connection with the seizures and forfeitures incurred or alleged to have been incurred under the said act and regulations. In the performance of said administrative duties the appropriate officials of the Bureau of Customs shall be governed by the procedures established by the Customs Regulations insofar as such procedures are applicable and not inconsistent with the provisions of the Gold Reserve Act of 1934 and the Gold Regulations.