ATTICA. Athens. AR Tetradrachm (17.19 gms), ca. 454-404 B.C. NGC EF, Strike: 3/5 Surface: 4/5. HGC-4, 1597; Kroll-8. Obverse: Helmeted head of Athena right; Reverse: Owl standing right, head facing; olive sprig and crescent to left; all within incuse square. Ex: Parliament Collection.