Earthenware lead white pot, unglazed, conical, on stand foot, lead white pot pot holder soil find ceramic pottery, hand-turned baked Pottery lead white pot. Conical shape on profiled base Unglazed red shard Lead white pots were used to solidify the lead white paste and harden; the resulting cones were traded or ground archeology Rotterdam Heliport site indigenous pottery lead white paint glaze craft Soil discovery: Heliport site Rotterdam June 1978.