Stock Photo - Earthenware dish, yellow shard, decorated in sludge and sgraffito technique, floral decor, dish crockery holder soil find ceramics earthenware glaze salt glaze, hand turned sgraffito glazed fried loin cord Pottery dish yellow shard decorated in sludge and sgraffito technique Decoration consists of leaf motifs in the midfield in dark gray and green On the shoulder some red rings on the flag in green and gray band series of waves. Stand surface. Turning wings on the underside of the flag. Restoration is color-repainted archeology Rotterdam City Triangle underground pit Blaak indigenous pottery import food serving table serve Soil discovery of metropolis Blaak Rotterdam summer 1977.