Ancient, Greek coins, Attica, Athens AR Tetradrachm. approx 454-404 BC. Head of Athena right, wearing crested Attic helmet ornamented with three olive leaves above visor and spiral palmette on bowl, round earring with central boss, and pearl necklace) (Owl standing to right with head facing, olive sprig and crescent behind,?T? before; all within incuse square. 17.17 g. Minor test cut behind head. SNG Cop. 31. XF