Watch List notes:

KINGS OF BITHYNIA. Prusias II Cynegos, 182-149 BC. (Bronze, 19 mm, 5.51 g), Nikomedia. Eagle standing to right, with wings spread. c/m: Male head to right (Dionysos?) within a circular indent. Rev. BAΣIΛEΩΣ ΠΡΟYΣIOY Thunderbolt; monogram below. RG 36. HGC 7, 630. Beautiful dark green patina. Well centered with a sharply struck countermark. Very fine.

From an American collection.