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 10 ROUGH WATCH OR CLOCK MOVEMENTS. 91 10 11 COMP. MOVEMENTS, UNASSEMBLED/PARTLY ASSEMBLED(MOVEMENTS SETS),OF WATCHES Commodity Code Description 91 10 11 00 COMP. MOVEMENTS, UNASSEMBLED/PARTLY ASSEMBLED(MOVEMENTS SETS),OF WATCHES