Colorless, transparent blue, pale amber lead glasses; blown with internal latticino decoration; ground, polished. Flattened teardrop shape vase with extremely heavy walls, narrow lipless fire-polished opening; heavy colorless wall encases smaller ovoid cavity of amber cased in colorless with fine vertical blue stripes; ground and polished concave pontil area, base ground and polished flat; inscribed in block letters on base: "UNICA/530/KOSTA ("S" is topped with small crown)/SWEDEN".