ATHENS: Anonymous, 449-413 BC, AR tetradrachm (18.17g), Athens, SNG Copenhagen 31-40, head of Athena right, wearing crested Attic helmet ornamented with three laurel leaves and vine scroll // AΘE, owl standing right, head facing; olive sprig and crescent moon behind, all within incuse square, Strike 4/5, Surface 3/5, NGC graded Choice AU.

Estimate: USD 500 - 550