Diadumenian, as Caesar, 217-218. Antoninianus (Silver, 22 mm, 4.48 g, 12 h), Rome, spring-summer 217. M OPEL DIADVMENIANVS CAES Radiate, draped and cuirassed bust of Diadumenian to right. Rev. PRINC IVVENTVTIS Diadumenian, as prince of the youth, standing left in military attire, holding baton in his right hand and long scepter in his left; to right, aquila and signum. BMC -. Clay Issue 1. Cohen 11. RIC 106. Rare. A beautiful example with a very attractive portrait. Very light porosity and with some minor weakness on the reverse, otherwise, extremely fine.