Macrinus and Diadumenian, AE38 medallion of Herakleia Salbace, Caria. AD 217-218.

MAR OP CEBH MAKREINOC M OP ANTWNEINOC (or beginning MAR OPE), laureate, draped and cuirassed bust of Macrinus right, facing bare-headed, draped and cuirassed bust of Diadumenian left.
HRAKLEWTWN, Macrinus standing left, holding patera and spear, crowned by Tyche, turreted, standing behind him.

SNG Righetti 967; Kapossy GM 96; Imhoof KM 10; Vierordt 1968 (this coin).

Image from the Vierordt catalog, (auct. Schulman 1923).