ATTICA, Athens. Circa 454-404 BC. AR Tetradrachm (23mm, 16.95 g, 6h). 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. In NGC encapsulation 5770839-015, graded XF, Strike: 5/5, Surface: 2/5, marks.