Attica, Athens. Ca. 406/5 B.C. Fourrée tetradrachm (22 mm, 13.98 g, 10 h). Emergency coinage. Helmeted head of Athena right / AΘ[E], owl standing right with head facing, olive sprig and crescent behind; all within incuse square. Kroll pp. 7-8. aVF, most of the silvering missing leaving the copper core.