Attica, Athens Æ Foureé Tetradrachm (Silvered bronze15.88g, 27mm) ca 454-404 BC
Obv: Head of Athena right, wearing earring, necklace, and crested Attic helmet decorated with three olive leaves over visor and a spiral palmette on the bowl
Rev: Owl standing right, head facing; olive sprig and berry in upper left field, AΘE to right; all within incuse square.
Ref:Kroll 8; SNG Copenhagen 31;