Watch List notes:

Attica, Athens Tetradrachm after 449, AR 24.00 mm., 17.13 g.
Head of Athena r., wearing Attic helmet decorated with olive leaves and palmette. Rev. Owl standing r.; in l. field, olive sprig and crescent. All within incuse square. Svoronos pl. XII. SNG Copenhagen 36.

Good Very Fine.