Stort porterglas 7/20 liter Drikkeglas The glass is mouth-blown with

The glass is mouth-blown with a spherical sand navel at the bottom

Frederik d

Unusual Berlinois glass with optical stripes in the cuppa

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

Stort porterglas 7/20 liter Drikkeglas The glass is mouth-blown withHeight 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.