Watch List notes:

Herennius Etruscus, as Caesar AD 249-251. Rome
Antoninianus AR

20 mm, 3,82 g

[Q] HER ETR MES DECIVS NOB C, radiate and draped bust to right / [P]IETAS AVGG, Mercury standing to left, holding purse and caduceus.

very fine

RIC IV 142b (Decius); RSC 11.