Czechoslovakia (now the Czech Republic) has a long history of glassmaking dating back to around the 13th. century, with an international reputation for quality craftsmanship, beauty and often innovative designs (indeed, the Czechs used iridescence on their Art Glass during the 1800s). We believe that the first use of iridescence on pressed glass in Czechoslovakia was done at Josef Inwald’s Rudolfova Hut glassworks in c.1914 or possibly a little earlier. Inwald’s glass patterns and shapes were designed by a man of incredible talent – Rudolf Schrotter (also known as “The Master”) – who worked for around three decades. Marigold Carnival was the predominant colour of Czech Carnival, often of superb quality (especially from Inwald).