At the beginning of the 20th century, a new genre of drinking glass flourished in a small part of Bohemia: the "flower-shaped" drinking glass. The technique was relatively simple; the floral decoration was enameled onto the outside of the bowl, often quite abstract, but when viewed from within, the flower bud revealed its full beauty. The production period was brief; only between 1900 and 1910 did several glassworks in Bohemia produce these glasses. Identification and attribution are often difficult because they were rarely signed. The glass in the "De Witte Zwaan" collection is most likely from the Fritz Heckert glassworks and designed by Ludwig Sutterlin. A similar example is in the V&A collection, London, England.