The clear glass encloses a sulphide of the Prussian Eagle set on a cross formed from ruby and white glass. Most likely made in a Silesian glassworks. (Silesia was under Prussian rule until 1871. It then became part of the German Empire until 1945). Relatively clear glass with a few bubbles and some striation in the dome. Wide basal rim around a polished central concavity.
Fine 2-row Concentric
