Ancient Greek
Attica, Athens, AR tetradrachm "owl," ca. 440-404 BC.SNG Copenhagen 31-40; Kroll 8.17.04 grams.Helmeted head of Athena right, with frontal eye / Owl standing right, head facing; olive sprig and crescent to left; all within incuse square. Deeply toned all over, banker's mark on edge, scrape in field below owl.
Estimate: 300-450 USD