Roman Provincial BITHYNIA. Prusa ad Olympum. Pertinax, 193. Diassarion (Bronze, 23 mm, 7.08 g, 2 h). AYT K Π ЄΛBIOC ΠЄPTINAΞ CЄB Laureate head of Pertinax to right. Rev. ΠP-OY/CAЄΩN Hexastyle temple;