AR Tetradrachm Attica, Athens, ca. 410 BC

Obverse: head of Athena right, wearing earring, necklace, and crested Attic helmet decorated with olive leaves over visor and spiral palmette
Reverse: owl standing right with head facing, olive sprig with berry and crescent in upper left field, AΘE to right; all within incuse square
 
Ex Belgium private collection; ex Giessener Münzhandlung 36 (1988), lot 160