Attika. Athens, circa 470-454 BC. AR Tetradrachm (23.7 mm, 17.11 g.). Helmeted head of Athena to right, with frontal eye. Rev. AΘE, owl standing right, head facing; olive sprig and crescent to left; all within incuse square. SNG Copenhagen 31; Starr, Group IV; HGC 4, 1597. Nicely toned, with a lovely lusterous highlights preserved. Good very fine.