Brains Mind Set, Ltd Ed 100 ex by Bertil Vallien, Kosta Boda. In Bertil Vallien's world, we meet the inner nature of glass. Brains Mind is in stark contrast to the leather cushion. Brains Mind is cast in a carbon mold with Vallien's famous hand painted head cast in the solid glass block. This item is part of Kosta Boda's artist collection.