Jan Mennicken, Neck fragment of stoneware jug with blue ornament in relief, 1593, jug crockery holder soil find ceramics pottery glaze salt glaze, hand turned stamped molded glazed baked Neck fragment of Westerwald jug. Stoneware. Cylindrical neck with embossed decoration. Decoration consists of three oval cartouches in which three portraits and initials between the cartouches straight and curled ornaments and twice devil's head. Profile rings around the neck. Gray and blue dotted glaze. All high relief blue glazed Text and year in cartouches from left to right: I 93 M archeology underground pit Rotterdam Stadscentrum Stadsdriehoek Groenendaal indigenous pottery import donate beer wine drink serving table Soil discovery underground pit Groenendaal (canal dredger) 1976-08-10.