Watch List notes:

ATTICA, Athens. Circa 500/490-485/0 BC. AR Tetradrachm (21mm, 17.77 g, 2h). Head of Athena right, with frontal eye, wearing crested Attic helmet decorated with small spiral on the bowl, and round earring / Owl standing right, head facing; olive sprig to left, AΘ[E] to right; all within incuse square. Seltman Group M, unlisted dies (but obv. from same hand as A239); Asyut Group IVa; HGC 4, 1590. Attractively toned, small mark and minor metal flaw on reverse. Good VF. Well centered and struck.