Watch List notes:

ATTICA, Athens. Circa 500/490-485/0 BC. AR Tetradrachm (21mm, 17.07 g, 11h). Helmeted head of Athena right / Owl standing right, head facing; olive spray behind; all within incuse square. Seltman Groups M & G; Asyut Group IV; HGC 4, 1590. VF, slightly off center and minor roughness on obverse.