CBS Register: TO.430. 2nd drum of Column A. Inlay of mosaic in bitumen (limestone, shell, mother of pearl). Card: Mosaic column consisting of 5 drums (4 restored; 1 fragmentary). Wood core; bitumen coating; pink limestone, black shale and white shell / mother of pearl traingular and diamond shaped tesserae. copper wire for attaching tesserae to bitumen. Sections of column formerly catalogued as B15896 and B15897, before restoration.