MACRINUS & DIADUMENIAN / Apollo.AE28. FDC Markianopolis. MACRINUS & DIADUMENIAN. 217-218AD. AE28 -- 5 Assaria. Superb FDC OBV: Vis a vis busts of Macrinus, on left, laureate, and Diadumenian, bare-headed; REV: Naked Apollo, standing left, left hand on tripod, holding, olive-branch, fired altar to the right. RARE! Superb artistic coin!