http://collections.mfa.org/internal/media/dispatcher/1493792/resize%3Aformat%3DfullConical eggshell-ware bowl3100–3000 B.C.PotteryEggshell thin, handmade polished ware of Nubian A-Group, with black interior and buff exterior painted with red painted geometric patterns imitating basketry.Vessels19.0000000000 Centimeterhttp://collections.mfa.org/objects/142233/rdf