Earthenware dish on stand ring, yellow sludge decoration in mirror and wave line along the edge, dish plate crockery holder earth discovery ceramic earthenware glaze lead glaze clay, hand-turned glazed decorated fried lemonade Pottery dish on stand ring Glazed internally Decorated in sludge technique Decoration consists of yellow line straight through the mirror flanked by two rolled lines On the flag single undulating line Groove on the transition from side wall to flag. Thickened upstanding dish edge. Restoration is repainted archeology underground pit Rotterdam City Triangle Blaak Groenendaal indigenous pottery serving serving table room Soil discovery of the Groenendaal direction Blaak.