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 08 Watch movements, complete and assembled 91 08 11 WITH MECHANICAL DISPLAY ONLY OR WITH A DEVICE TO WHICH A MECHANICAL DISPLAY CAN Commodity Code Description 91 08 11 00 WITH MECHANICAL DISPLAY ONLY OR WITH A DEVICE TO WHICH A MECHANICAL DISPLAY CAN