Foam glass bowl with green thread decoration, Loetz around 1935

Foam glass bowl made of colorless glass with irregular purple glass threads running through it and white powder between the layers. Floor with dislocated tear. Shell is in intact condition. Crystal factory Spiegelau/Lower Bavaria, which produced these bowls for Lötz. ca.1936-38. Loetz sample sheet from 1936, shape 18/25, version A. Height: approx. 6.0 cm. Diameter: approx. 25.5 cm. Lit: Lötz, Bohemian Glass 1880-1940, Volume I, page 317.