ATTICA, Athens. Circa 485/0 BC. AR Tetradrachm (20.5mm, 17.47 g, 4h). Helmeted head of Athena right, with frontal eye / Owl standing right, head facing; [olive spray to left]; all within incuse square. Seltman Group E; Asyut Group V; HGC 4, 1590. Struck with worn dies, off center on reverse. VF.