The so-called window gap between the glass. Manufacturer, Riihimäki glass. Year, 1940's.

Item no lem984.

The so-called window spacing between the glass.

Manufacturer, Riihimäki glass. Year, 1940's.

Height 12.5 cm, diameter 6 cm.

The weight difference in the glasses.

Glass is an intermediate glass that is meant to collect moisture between the outer and inner windows (wool or lichen was put into the glass). However, they have also been sold asjuice glass. The designer in Riihimäki's lists is not mentioned.