Wenzel Hagelstam, Uusi Antiikkikirja, 1900-1980, Helsinki, 2003, p. Timo Sarpaneva: Glass Art, exh. cat., The Finnish Glass Museum, Riihimäki, 2015, p.
1984 Clear lead crystal glass, steam blown, cut and surface polished. Each: 11 1/4 in. (28.6 cm) high, 6 1/2 in. (16.5 cm) diameter Produced by Iittala, Finland. Underside of each incised with TIMO SARPANEVA IITTALA 1984 C406 and C1566 respectively.