Fragment berkemeier with foot, largest part stem with thorn buds and very small part of the calyx, berkemeier drinking glass drinking utensils tableware holder soil find glass forest glass, free blown and formed glass application Fragment of foot edge bottom part of trunk and small part chalice of berkemeier in clear green glass (forest glass) All-round pinched glass thread as stand ring Pontil mark under raised bottom (1.5 cm) Stem with two rows each with seven flat thorn buds missing from the top row two Open transition to calyx with smooth glass thread around Slight parts of smooth calyx archeology Rotterdam City Triangle Drink job Soil discovery Pathway 18 March 1940 .