Watch List notes:

ATTICA, Athens. Circa 500/490-485/0 BC. AR Tetradrachm (18.5mm, 17.04 g, 5h). Helmeted head of Athena right / Owl standing right, head facing; olive spray behind; all within incuse square. Seltman Group Gi; Asyut Group IVc; HGC 4, 1590. VF, lightly toned, compact flan.