Watch List notes:

Herennius Etruscus. As Caesar, A.D. 250-251. AR antoninianus (21.4 mm, 3.35 g, 7 h). Rome mint, struck A.D. 251. Q HER ETR MES DECIVS NOB C, radiate, draped and cuirassed bust of Herennius Etruscus right / PIETAS AVGG, Mercury standing facing, head left, holding purse and caduceus. RIC 142b (Tr. Decius); RSC 11. VF.