Attica, Athens. Tetradrachm; Attica, Athens; c. 500/490-485/480 BC, Tetradrachm, 17.47g. Seltman-Group Gii, Asyut-Group IVi. Obv: Helmeted head of Athena r. Rx: Owl r., olive twig with two leaves behind. Ex CNG 102, 18 May 2016, lot 282.Well centered with an exceptionally strong obverse. Reverse has minor surface roughness in field, but well centered for this issue . EF