Macrinus and Diadumenian, 217-218 AD. AE Pentassarion of Markianopolis, Moesia. 

Obv: AV K OPPE CEV MAKPEINOC, K M OPEA ANTONEINOC DIADOMEN 
below laureate head of Macrinus right vis-à-vis bare head of Diadumenian left
Rev: VP PONTIANOV MARKIANOPOLEITWN, Artemis advancing right,  
holding bow and drawing arrow from quiver on her back, 
hound running at foot, retrograde E in left field. 

With permission of Roma Numismatics, June 2009