Diadumenian Greek Imperial (Colonial) $112.50 (reserve not met) Jun-13-00 an excellent bronze Greek Imperial (Roman Colonial) coin of Diadumenian, as caesar under his father Macrinus, 217-218 A.D. The coin was struck in Nicopolis, Moesia Inferior and is 27mm in diameter. It has a lovely dark green patina. It is NOT LISTED in AMNG, the "bible" of coins from that region! The obverse depicts his bare head right. The reverse features Hygieia, the daughter of Asklepios, feeding a serpent from a patera..