… Worked ivory, bone, tortoise-shell, horn, antlers, coral, mother-of-pearl and other animal carving material, and articles of these materials (including articles obtained by moulding). …
Explanatory notes
… processes extending beyond the straightening and surface‑levelling of scales (this last operation is exceptional … of Chapter 82, presented separately. (5) Paper‑knives, letter‑openers, book‑markers. (6) Frames for pictures, … However, the heading excludes quills simply cut to length and not further worked ( heading 05.05 ) and quills …