ROMAN EMPIRE. Quintus Herennius Etruscus Messius Decius (early summer 251 CE), brass Sestertius, 16.90g, obverse; Q HER ETR MES DECIVS NOB C, draped bust facing right, reverse; PIETAS AVG S C, Mercury standing left, holding purse & caduceus. S-9531, VG, corroded.