Herennius Etruscus. As Caesar, A.D. 250-251. AE sestertius (30.84 mm, 17.16 g, 11 h). Rome mint, struck A.D. 251. Q HER ETR MES DECIVS NOB C, bare-headed, draped and cuirassed bust right / PRINCIPI IVVENTVTIS, S-C, Herennius standing left, holding baton and spear. RIC 172. aVF, scratches; black patina with orange highlights.