ATTICA, Athens. Circa 454-404 BC. AR Tetradrachm (24.5mm, 16.52 g, 8h). 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. Lightly toned, test cuts, bankers' marks, countermark on reverse. Fine.