Kings of Bithynia. Prusias I or II (Circa 230-149 BC). Ae 22. Very Rare

Kings of Bithynia. Prusias I or II (Circa 230-149 BC). Ae 22 mm. 6.6 gm. Obv: Head of Hermes right, wearing petasos. Rev: BA?????? / ????????. Lyre; below, three monograms. Baldwin, A Bronze Coin of Bithynia (JIAN 4, 1901) p. 68, fig. 2; cf. Waddington, RG p. 224, 21 (four monograms). Rare.