Watch dials as components for assembly into a timepiece classify under 911430. A dial sold as a standalone decorative or collectible item rather than as a functional watch component would need to be assessed under its own material-based heading. The intended use as a watch part is the key criterion for 911430.

Plates and bridges (911440) are finished structural components — the machined frames that hold a movement's gear train — classified as parts. Heading 9110 covers movements themselves that are unassembled, incomplete, or rough, meaning the movement as a whole unit in an intermediate state. A finished plate destined for assembly into a movement is a part under 9114, not a rough movement under 9110.