Greece Athens 1 Tetradrachma 455-449 BC. Athens Attica. AR Tetradrachm. Av.: Head of Athena to right wearing disc earring pearl necklace and a crested Attic helmet adorned with three olive leaves and a spiral palmette. Rev. ΑΘΕ Owl standing to right head facing the viewer; to left olive sprig and crescent moon; all within incuse square. Silver. Agora 8c ff. Svoronos Tresor pl. 14.