231211 Glass in sheets, bent, edge-worked, engraved, drilled, enamelled or otherwise worked, but not framed or mounted

23121150 Optical glass of HS 7003, 7004 or 7005, bent, edge-worked, engraved, etc 23121190 Other glass of HS 7003, 7004 or 7005, bent, edge-worked, engraved, etc