Section 15 BASE METALS AND ARTICLES OF BASE METAL 74 COPPER AND ARTICLES THEREOF 74 02 UNREFINED COPPER; COPPER ANODES FOR ELECTROLYTIC REFINING. 74 02 00 UNREFINED COPPER; COPPER ANODES FOR ELECTROLYTIC REFINING. Commodity Code Description 74 02 00 00 UNREFINED COPPER; COPPER ANODES FOR ELECTROLYTIC REFINING.