Ancient Greek: Attica, Athens AR TetradrachmC. 454-404 BC  17.3 gramsObverse: Helmeted head of Athena Right, with frontal eyeReverse: Owl standing right, head facing, olive sprig and crescent behind; all with incuse squareKroll 8, HGC 4, 1597 classic grading near EF modern grading AU pleasing patina