Watch List notes:

ACHAEMENID EMPIRE. Uncertain mint. Time of Darios I to Xerxes II (Circa 485-420 BC). AR Tetartemorion.
Obv: Head of the Persian Great King right.
Rev: Quadripartite incuse square.
Cf. CNG E-351, lot 411; cf. Helios 7, lot 402. Very rare
Condition: Fine.
Weight: 0.20 g.
Diameter: 5.90 mm.