Watch List notes:

Attica, Tetradrachm, Athens, After 449 BC; AR (g 17,01; mm 23; h 8); 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.
Rare the presence almost entirely of the crest, cabinet tone, minor incision on the chin, extremely fine.