ATTICA, Athens. Circa 500/490-485/0 BC. AR Tetradrachm (22mm, 16.90 g, 10h). Head of Athena right, wearing crested Attic helmet / Owl standing right, head facing; olive spray to left; all within incuse square. Seltman Group M; Asyut Group IVa; HGC 4, 1590. Test cut on obverse, corresponding flat area on reverse. VF. Well centered.