Shard of Bartmann jug, also called Bellarmine jug, appliqué with private label, beardmug tableware holder soil find ceramic stoneware glaze salt glaze, hand turned stamped glazed glazed baked Belly fragment of stoneware Bartmann jug. Appliqué consisting of an oval in which private label is depicted on background of leaves. The house brand consists of trident with letter X arrowheads or letter V on the end. Covered with polished mottled salt-glaze blue accents by taping with cobalt oxide archeology Rotterdam City Triangle underground pit Blaak indigenous pottery import packaging transporting donate storage brands Soil discovery metro works location Blaakstation Rotterdam Finds from the bottom of the chamber.