Fragment of foot, bottom and part of wall of network beaker, goblet drinking glass drinking utensils tableware holder soil find glass, hand-blown in mold blown glass application Fragment of part of foot part of bottom and part of wall of network beaker in clear colorless glass Around widely applied convex foot edge on regular distances are squeezed which creates wavy effect. pontil mark under high rise (4.0 cm) bottom Vertical vertical edge imposed vertical wires that are squeezed at regular intervals to form diamond-shaped network pattern archeology Rotterdam railroad tunnel medicine drug Soil discovery: rail tunnel Rotterdam.