Watch List notes:

Attica, Athens Obol circa 449-420, AR 8.60 mm., 0.59 g.
Head of Athena r., wearing crested Attic helmet with three olive leaves over visor and spiral palmette on bowl. Rev. Owl standing r., head facing; in upper field l., olive twig with two leaves and berry. All within incuse square. Dewing 1608. Klein 199.

Very fine