Herennius Etruscus AR Antoninianus. Rome mint. AD 250-251

Q HER ETR MES DECIVS NOB C, radiate, draped bust right.

PIETAS AVGG, Mercury standing left, holding purse and caduceus. 

RIC IV-iii, 142b; RSC 11.

With permission of Kölner Münzkabinett - Auction 109, Lot 587, Nov. 2018.