ATTICA, Athens. Circa 454-404 BC. AR Tetradrachm (23.5mm, 16.88 g, 9h). Helmeted head of Athena right, with frontal eye / Owl standing right, head facing; olive spray and crescent to left; all within incuse square. Kroll 8; HGC 4, 1597. Lightly toned, porous, test cuts and countermarks, graffito on reverse. Fine.