Private commission, Finland
Marianne Aav, Rosa Barovier Mentasti and Gordon Bowyer, et al., Tapio Wirkkala: eye, hand and thought, exh. cat., Museum of Art and Design, Helsinki, 2000, p. 358 for a similar example
Heikki Matiskainen, ed., Tapio Wirkkala: Poet in Glass and Silver, exh. cat., Finnish Glass Museum, Riihimäki, 2013, p. 226, p. 375, figs. 57-58 for similar examples