Large porter glass 7/20 litres

Height 17 cm. Large beer glass from the beginning of the 20th century with the measurement indication 7/20 l iter. It is mouth-blown with clear grooves from the glassmaker's rod and a large sand nail underneath. 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 switches to metric measuring units. Item number: 11838