Fragment of earthenware dish on stand fins with bird's head in sludge technology, dish crockery holder soil find ceramic earthenware clay engobe glaze lead glaze, hand-turned glazed sgraffito ring loaf baked Edge fragment of flat dish on stand fins (only feed visible). Top glazed and provided with yellow sludge decoration reverse side unglazed. hole at the edge. Red earthenware archeology Rotterdam railway tunnel serving serve adorning food Soil discovery: railway tunnel Rotterdam.