Large vase made of dark violet glass with dense, silver-yellow fused glass, a flask-shaped body with a rounded base, a tapered rim, and a polished rim. The surface is reduced and matte iridescent.The vase is in undamaged condition.Loetz Witwe in Klostermühle, circa 1900, Cobalt Papillon decor, form 6644. Height: approx. 26 cm, diameter: approx. 14 cm. Reference: Lötz - Bohemian Glass 1880-1940, Vol. 1, Monograph, Fig. 50 (decoration)