Section 15 Base metals and articles of base metal 83 Miscellaneous articles of base metal 83 04 Filing cabinets, card-index cabinets, paper trays, paper rests, pen trays, office-sta 83 04 00 Of copper or of lead 83 04 00 93 Of copper or of lead Commodity Code Description 83 04 00 93 00 Of copper or of lead