Bourgogne glasses (4x), drinking service "Cyrano", design Gerard Muller, Amsterdam / the Netherlands ca.1925, executed by Josephinenhütte Schreiberhau / Silesia
De Toegepaste Kunsten in Nederland, "Glas en Kristal", karel Wasch 1924, page 43, pic.17 & Modern Glas in Nederland 1880-1940 / Haags Gemeentemuseum, page 112