Coin depicted roughly twice actual size*

Antoninianus of Herennius Etruscus

Silver antoninianus, 22mm, 2.98gm, issued AD 250/251 Rome mint.

Obv: Q HER ETR MES DECIVS NOB C, Radiate, draped bust right.

Rev: PIETAS AVGG, Mercury, cloak on shoulders, standing left, holding purse and caduceus.

References: Sear 9520, RIC 142b, RSC 11.

Scarce.