Broneer, O ... American School of Classical Studies at Athens ... The calyx-krater of Exekias, first published in 1937,1 was discovered at the bottom of a well in the American School excavations on the North slope of the Acropolis in Athens. The circumstances of discovery ... 1956 ... The larger of the new pieces,4 from the center of the warrior scene ( Pl. 50, a), preserves much of the two overlapping shields of the protagonists. ... The two shields of the protagonists are turned so that their rear, concave sides face each other. On the Pharsalos krater all the combatants present the outside, convex side of their shields toward their opponents ( Pl. 51, b, c ).