Attica, Athens. Silver Tetradrachm (17.20 g), ca. 454-404 BC. Helmeted head of Athena right, frontal eye. Reverse: AΘE, owl standing right, head facing; above to left, olive-spray with berry and crescent; all within incuse square. Kroll 8; Svoronos pl. 14; SNG Copenhagen 31-40. Extremely high relief with very deep incuse square reverse. Lightly toned. Well centered and excellent metal. Nearly Mint State. Estimated Value $1,000 - UP