Watch List notes:

ATTICA: Athens, AR tetradrachm (17.15g), ca. 455-440 BC, S-2526, HGC-4/1597, late transitional issue, helmeted head of Athena right // owl standing right, head facing, olive sprig with sharp leaves and crescent to left, AΘE, all within incuse square, lovely reverse with light smoky toning, Strike 3/5, Surface 3/5, NGC graded AU

Estimate: 400-600 USD