Attica, Athens, c. 454-404 BC. AR Tetradrachm (25mm, 17.21g, 6h). Possible eastern imitation. Helmeted head of Athena r. R/ Owl standing r., head facing; olive sprig behind; all within incuse square. Kroll 8; SNG Copenhagen 31. Irregular flan, banker's mark, VF - Good VF