Watch List notes:

Attica, Tetradrachm, Athens, c. 500-485 BC; AR (g 16,69; mm 21; h 3); Head of Athena r., wearing crested Attic helmet,Rv. AΘE, owl standing r., with wings closed; at l., olive spring. All within incuse square. SNG Copenhagen 15-20.
Rare, cabinet tone, very fine.