Fragment of soil, base and part of chalice birch in clear light green glass, beaker drinking glass drinking utensils tableware holder soil find glass forest glass h 3.7, hand-blown glass application Fragment of bottom foot edge and part of chalice of berkemeier in clear light green glass (forest glass) Pontil mark under slightly raised soil. On foot continuous imposed pinched glass thread as stand ring foot edge. Hollow trunk decorated with two rows of six enforced thorn buds On transition of trunk and calyx thin imposed glass thread archeology Rotterdam rail tunnel drink Soil discovery: rail tunnel Rotterdam.