Brown Bartmann jug, also called Bellarmine jug, underside of belly and foot gray, Bartmann jug jug crockery holder soil find ceramic stoneware clay engobe glaze salt glaze, hand turned stamped glazed glazed baked stoneware jug gray shard brown engobe and salt glaze with gray dots pointed tail beard mask on the neck archeology Rotterdam City Triangle Zandstraat City Hall City Hall import pottery drink packing store carry transport Soil discovery: excavated on the site intended for the Raadhuisbouw on the Coolvest former Zandstraat 1915.