Special warehouse goods: Precious metals and supply-destined goods must be warehoused for duty-free shops, ships, aircraft, and privileged persons. Specifies goods to be deposited in a licensed special warehouse: gold, silver, other precious metals and articles thereof; and goods warehoused for supply to duty free shops, for use as stores on vessels or aircraft, and for supply to foreign privileged persons under the applicable customs privileges rules. An amendment removed semi-precious metals from the enumerated category.