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 ... On the Pharsalos krater all the combatants present the outside, convex side of their shields toward their opponents ( Pl. 51, b, c ). There the shield of the Greek protagonist overlaps that of Hektor, as seen in the picture, and the other four warriors all hold their shields in proper defensive position so as to be seen almost in profile. ... The master of the North Slope krater has departed from a realistic rendering of the battle scene in order to obtain a better picture; the painter of the Pharsalos vase has sacrificed the principles of composition for accuracy in depicting the combat.