BITHYNIA. Prusa ad Olympum. Caracalla, 198-217. Diassarion (Bronze, 24 mm, 6.09 g, 1 h). AYT K M AYP ANTΩNINOC / CЄBA Laureate head of Caracalla to right. Rev. ΠPOYCAЄΩ/N Ajax, wearing helmet and balteus, falling on his sword before a rocky outcropping; shield on ground before him. RG 102. SNG von Aulock 873. Rare and with a very interesting reverse. Repatinated and with two flan cracks, otherwise, very fine.