Stort porterglas 7/20 liter Drikkeglas The model appears both at

The model appears both at Holmegaard Glasværk in their catalogue from 1865 and in Kastrups Glasværk's catalogue from 1886

The Jægersborg glass has a symmetrical edge cut around the bowl

Unusual Berlinois glass with optical stripes in the cuppa

The glass is ground with facets up the stem

Stort porterglas 7/20 liter Drikkeglas The model appears both atHeight 17 cm. Large beer glass from the beginning of the 20th century with the measurement 7 20 l iter. It is mouth blown with clear grooves from the glassmaker's rod and a large sand nail at the bottom. The edge is cut and heated. 7 20 liters corresponds to 350ml, so it can be assumed that the glass is after 1907 when Denmark switched to metric units of measurement.