Large foam glass bowl made of colorless glass with irregularly traversed vermilion glass threads and white powder between the layers. Bottom with dislocated demolition. Shell is in the healing state. Kristallfabrik Spiegelau/Lower Bavaria, which produced these bowls for Loetz. Form 18/25, ca.1925-30. Height: approx. 6.5 cm, diameter: approx. 28.5 cm. Lit: Specimen copies in the Passau Glass Museum, room 26, showcase 99. Lit. Lötz, Bohemian Glass, sample sheet sales catalogue.