Watch List notes:

Attica, Tetradrachm, Athens, After 449 BC; AR (g 17,06; mm 22; h 3); Head of Athena r., wearing crested Attic helmet, decorated with a olive wreath and palmettae, Rv. AΘE, owl standing r. with closed wings; at l., olive twig and crescent. All within incuse square. SNG Copenhagen 31 ff.
Lustrous, about extremely fine.