Attica, Athens. 449-404 B.C. AR tetradrachm (25.1 mm, 16.10 g, 10 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. gVF, toned, test cut on reverse.