Attica. Athens. Silver Tetradrachm (17.2g), ca. 440-404 BC. Head of Athena right, wearing crested Attic helmet onamented with thee olive leaves above visor and spiral palmette on helmet; round earring and pearl necklace. Reverse: AΘE before owl standing to right with head facing, olive spring and crescent behind; all in incuse square. Kroll 8; Dewing 1591-8; SNG Coppenhagen 31. Boldly struck in high relief and lightly toned. NGC graded Choice XF; Strike: 4/5, Surface: 4/5 flan flaw. Estimated Value $400 - UP