Watch List notes:

Herennius Etruscus. As Caesar, AD 249-251. AR Antoninianus (22mm, 3.96 g, 8h). Rome mint, 2nd officina. 3rd-4th emissions of Trajan Decius, AD 250. Radiate and draped bust right / Herennius standing left, holding baton and spear. RIC IV 147c (Decius); RSC 26. EF, some green deposits.