Macrinus, AR denarius, Rome, AD 217-218. 20 mm, 2.76 g. 

IMP C M OPEL SEV MACRINVS AVG, laureate, cuirassed bust right with long beard.
PONTIF MAX TR P II COS P P, Securitas standing left, holding sceptre and leaning on column. 

RIC 35; RSC 87.

With permission of Naville Numismatics Ltd. auction 42, Lot 588, July 2018.