ATTICA, Athens. Circa 454-404 BC. AR Tetradrachm (22.5mm, 16.67 g, 10h). Helmeted head of Athena right, with frontal eye / Owl standing right, head facing; olive sprig and crescent to left; all within incuse square. Kroll 8; HGC 4, 1597. Fine, toned, porous, test cut on reverse.