Country of origin for customs purposes is determined by where the article underwent substantial transformation — in this case, the pressing of the vinyl record. The Czech Republic, as the country where the physical record was manufactured, would be the country of origin, regardless of where the original musical performance was recorded or where the master was created.

Sets containing articles classifiable under different headings are generally classified under GRI 3, which requires identifying the component that gives the set its essential character. For a music box set, CBP would typically look at the relative value, bulk, and role of each component. If the vinyl record is the primary item and the USB drive is ancillary, the set may classify under 852380. If the components are of roughly equal importance, the heading that appears last in numerical order under GRI 3(c) would apply. A binding ruling from CBP is advisable for high-value or high-volume shipments of such sets.