Attica, Athens. Tetradrachm; Attica, Athens; 440 BC, Tetradrachm, 17.20g. Kroll-8, Svoronos-pl.12-13 passim. Obv: Head of Athena r., wearing crested Attic helmet decorated with three olive leaves and palmette. Rx: ΑΘΕ Owl standing r., head front, crescent and olive twig with two leaves behind, all within incuse square.. MS