Head Tunnel vision by Bertil Vallien, Kosta Boda. The sculpture Head is a series of beautiful and expressive glass sculptures with shaping heads. This particular specimen has metal washers attached to the edge of the head. The sculpture sits on a stone pedestal that is 17cm in height and 10cm in width and depth. The head itself is then 21.5 cm in height, 21 cm in width and 16.5 cm in depth. A beautiful sculpture that is only made in one copy and created by Sweden's most famous glass artist and designer Bertil Vallien.