Diadumenian, AE24 of Heraclea-Pontica, Bithynia. AD 218.

M OPEL ANTWN DIADOYMENIANOC, bare-headed, draped and cuirassed bust right.
HRAKLHAC EN PONT, Dionysos, wearing short chiton and 
boots, standing left, holding kantharos and thyrsos, 
panther at foot left.

SNG von Aulock 6955; Mionnet II, 171; RecGen 177 var (panther).

Contributed by Malcolm Megaw, author of "Bronze Roman
 Provincial Coinage with Portraiture of Diadumenianus"
available on lulu.com