Herennius Etruscus as Caesar. Antoninianus; Herennius Etruscus as Caesar; 250-251 AD, Rome, Antoninianus, 4.29g. RIC-143 (S), C-14. Obv: Q HER ETR MES DECIVS NOB C Bust radiate, draped r. Rx: PIETAS AVGVSTORVM Sacrifical implements: sprinkler behind ladle, pitcher, lituus behind patera.. MS