Macrinus & Diadumenian Caesar, 217 - 218 AD. AE26 Pentassarion of Marcianopolis. Obv: AVT K OPPE CEVH MAKPINOC, K M OPPEL ANTWNINOC DIADOMEN, confronted busts Rev: VP PONTIANOV MARKIANOPOLEITWN, Hermes standing facing, head left, holding purse & caduceus. By permission of ancientcoinart.com, March, 2003.