An antique Art Nouveau style footed artistic blown glass bowl by Daum Nancy. Circa: 1910s. A colorless glass with blue, turquoise, and yellow melting. Marked with etching, Daum Nancy. Daum is a crystal studio based in Nancy, France, founded in 1878 by Jean Daum, 1825 to 1885. His sons, Auguste Daum and Antonin Daum, oversaw its growth during the burgeoning Art Nouveau period. Currently Daum is the only commercial crystal manufacturer employing the pate de verre, glass paste, the process for art glass and crystal sculptures, a technique in which crushed glass is packed into a refractory mould and then fused in a kiln. Antique and Vintage Art Glass Bowls, Vases, Home Decor, and Collectibles.