Attica, Athens. 454-404 B.C. AR tetradrachm (23.0 mm, 16.41 g, 9 h). Helmeted head of Athena right / AΘE, owl standing right with head facing, olive sprig and crescent behind; all within incuse square. Kroll 8; SNG Cop 31. Fine, toned lamination on obverse, shallow test cut on reverse.