Watch List notes:

Kings of Bithynia, Prusias II Cynegus, Bronze, Nikomedia, ca. 182-149 BC; AE (g 3,15; mm 18; h 12); Head of Prusias r., wearing a winged diadem, Rv. BAΣIΛEΩΣ ΠPOYΣIOY, Herakles standing l., holding club and lion's skin; on inner r., monogram. RG 25; HGC 7, 634.
Bold and attractive portrait. Untouched and glossy green patina, extremely fine. [Ex Numismatica Ars Classica 5 (1992), lot 136]