Cast glass and rolled glass, optical, in nonwired sheets, not otherwise worked (excl. glass coloured throughout the mass "body tinted", opacified, flashed or having an absorbent, reflecting or nonreflecting layer)
Cast glass and rolled glass, in nonwired sheets, not otherwise worked (excl. glass coloured throughout the mass "body tinted", opacified, flashed or having an absorbent, reflecting or nonreflecting layer, and optical glass)