Watch List notes:

Attica, Athens, AR tetradrachm, 400-353 BC, "owl." HGC 4.. 17.01 grams. Helmeted head of Athena right, with frontal eye and pi-style palmette / Owl standing right, head facing; olive sprig and crescent behind; all within incuse square. New style, high grade (frosty AU) but with banker's mark on Athena.

Estimate: $400-600