ATTICA, Athens. Circa 454-404 BC. AR Tetradrachm (23.5mm, 17.16 g, 11h). Helmeted head of Athena right / Owl standing right, head facing; olive sprig and crescent behind; all within incuse square. Kroll 8; HGC 4, 1597. Toned, underlying luster. Near EF. Well centered.