ATTICA, Athen. 454-404 BC. AR tetradrachm (17,06 g). Head of Athena in Attic helmet to right / AΘE, Owl standing right, head facing; Olive spray and crescent to left. All within incuse square. Wonderful steel-grey cabinet toning with some light iridescence. Well centered. Kroll 8, SNG Cop. 32-40, HGC 4, 1597, Grade:01