Watch List notes:

Herennius Etruscus. As Caesar, A.D. 250-251. Antoninianus (21.6 mm, 3.01 g, 6 h). Rome. Q HER ETR MES DECIVS NOB C, radiate and draped bust of Herennius Etruscus right / PIETAS AVGG, Mercury standing left with purse and caduceus. RIC 142b (Decius); RSC 11. aVF, dark patina.