MAK WW archive, Glass Inventory No. 3311, Model. No. va 35. Approximately 400 copies of this design in various versions and colors were made.
A purple vase of this design was sold at Christie's, New York, 3 December 2003, lot 20 for $19,120.
cf. W. Neuwirth, Wiener Werkstätte. Avantgarde, Art Deco, Industrial Design, 1984, pp. 196-7, no. 154.
An example of the present model in purple was featured in the Wiener Werkstätte 25th anniversary souvenir publication.