Severina, Antoninianus, 270-275, Period III, CyzicusSEVERI_NA AVGDiademed, draped bust right on crescent, hair in straight lines with long plait carried up the back of head, tucked under diademCONCOR_DIAE-MILITVMConcordia standing left, ensign in each handXXI in exergue22mm x 24mm, 4.00g