Attica, Athens, c. 454-404 BC. AR Tetradrachm (21,6 mm, 17,23 g). Head of Athena right, wearing crested Attic helmet decorated with three olive leaves over visor and a spiral palmette on the bowl R/ Owl standing right, head facing, with spread tail feathers; olive sprig and crescent behind, AQE to right; all within incuse square. Kroll 8; SNG Copenhagen 31. Very fine.