This phallic-shaped head adornment (kalacha), made from metal and shell, would have been traditionally worn by a Konso male elder as a symbol of leadership. Among the Konso of Ethiopia, phallic symbols are believed to preserve the strength of the man. Affixed to a leather strap, the kalacha would have been tied around the forehead of the elder or chief as a visible emblem of status.
The way in which the phallic shape attachment has been forged together with two different metals, bronze and steel, is a particularly interesting characteristic of this piece.
A. Fisher (1984) Africa Adorned p.63