ATTICA. Athens. AR Tetradrachm (16.00 gms), ca. 393-294 B.C.Svoronos-pl. 20#31. Helmeted head of Athena facing right; Reverse: Owl standing right, head facing, olive sprig and crescent moon behind, all within incuse square. Good strike on a compact flan.NGC AU, Strike: 4/5 Surface: 3/5.