Silver denarius, 20mm, 2.93gm, issued AD 217 Rome mint.
Obv: IMP C M OPEL SEV MACRINVS AVG, Laureate, draped bust right.
Rev: PONTIF MAX TRP COS PP, Jupiter standing left, holding thunderbolt and sceptre.
References: Sear 7342, RIC 15, RSC 55a.
Scarce.