Continental Greece. Attica, Athens. AR Tetradrachm, c. 454-404 BC. Helmeted head of Athena right, with frontal eye. / AΘE. Owl standing right, head facing; olive sprig and crescent to left; all within incuse square. HGC 4 1597; SNG Cop. 31; Gulbenkian 519-21. AR. 17.20 g. 26.00 mm. Sharply struck and well centred on nice oval flan. Brilliant and lightly toned, with golden reddish hues. About EF.