Herennius Etruscus as Caesar. Antoninianus; Herennius Etruscus as Caesar; 250-251 AD, Rome, Antoninianus, 3.90g. RIC-142b, C-11. Obv: Q HER ETR MES DECIVS NOB C Bust radiate, draped r. Rx: PIETAS AVGG Mercury standing l. holding purse and short caduceus. From the Philip Ashton Collection, ex Pegasi A23, November 2010, lot 575.. MS