Section 18 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof 91 Clocks and watches and parts thereof 91 13 Watch straps, watch bands and watch bracelets, and parts thereof 91 13 20 Of base metal, whether or not gold or silver-plated 91 13 20 00 Of base metal, whether or not gold or silver-plated Commodity Code Description 91 13 20 00 000 Of base metal, whether or not gold or silver-plated
