Attica, Athens. Tetradrachm; Attica, Athens; c. 440 BC, Tetradrachm, 17.13g. Obv: Helmeted head of Athena r. Rx: Owl standing r., head front, crescent and olive twig with two leaves behind, ?T? downwards in r. field. With NGC ticket 6057810-097, graded Ch AU, Full Crest, 4/5, 4/5, removed from slab.This coin has an incredible full crest made possible by the small head of Athena. MS