PLATINUM, PLATINUM SHEETS, PLATINUM BARS, PLATINUM WIRE, PLATINUM ALLOYS, PLATINUM SPONGE; SILVER, SILVER SHEETS, SILVER BARS, SILVER WIRE, SILVER ALLOYS; NICKEL, NICKEL SHEETS, NICKEL BARS, NICKEL WIRE, NICKEL-CLAD STEEL SHEETS, NICKEL ALLOYS; GOLD, GOLD BARS, GOLD ALLOYS; TUNGSTEN, TUNGSTEN ALLOYS; THERMOSTATIC METAL, THERMOSTATIC-METAL SHEETS, THERMOSTATIC-METAL BARS; WIRE MADE ONE END OF PLATINUM, PLATINUM-IRIDIUM, SILVER, GOLD, OR TUNGSTEN OR ALLOYS OF THESE METALS WITH EACH OTHER OR WITH OTHER METALS WELDED, FUSED OR SOLDERED TO THE OTHER END MADE OF NICKEL, STEEL OR OTHER BASE METAL OR METALS; PLATINUM, PLATINUM-IRIDIUM, SILVER, GOLD, OR OTHER PRECIOUS METALS OR TUNGSTEN OR ALLOYS OF THESE METALS WITH EACH OTHER OR WITH OTHER METALS, WELDED, FUSED OR SOLDERED TO A BASE METAL OR METALS; SHEETS MADE WITH A FACING OR INLAY OR INSERT OF PLATINUM, PLATINUM-IRIDIUM, GOLD, SILVER OR OTHER PRECIOUS METAL, OR ALLOYS OF THESE METALS WITH EACH OTHER OR WITH OTHER METALS, WELDED, FUSED OR SOLDERED TO BASE METALS SUCH AS COPPER, STEEL, NICKEL, ETC.; COPPER AND ALLOYS OF COPPER WITH CADMIUM, CHROMIUM, BERYLLIUM, COBALT AND OTHER METALS AND SINTERED ALLOYS OF SILVER WITH TUNGSTEN, MOLYBDENUM AND OTHER METALS, PLATINUM OR GOLD-CLAD WIRE OR RODS MADE OF A PLATINUM OR GOLD EXTERIOR AND A CORE OF ANOTHER METAL; WOLLASTON WIRE MADE WITH A CORE OF PLATINUM AND AN EXTERIOR OF ANOTHER METAL; BARS OR SHEETS OF STEEL OR OTHER METAL WITH A FACING OF NICKEL OR OTHER METAL OR ALLOY THEREOF WELDED OR SOLDERED ON ONE OR BOTH SIDES OF THE BARS OR SHEETS OF STEEL OR OTHER METAL; AND WIRE CLAD WITH COPPER OR OTHER METAL HAVING A COPPER OR OTHER METAL EXTERIOR WELDED OR SOLDERED TO A CORE OF ANOTHER METAL