Bithynian Kingdom. Prusias I. 238-183 B.C. AE 25 (25.10 mm, 9.66 g, 3 h). Diademed head of Zeus right / BAΣIΛEΩΣ / ΠPOYΣIOY, to right and left of thunderbolt; uncertain monogram in near left field; all within oak-wreath. SNG Von Aulock 245; Rec Gen 12; SGICV 7261.