Watch List notes:

Herennius Etruscus. As Caesar, A.D. 250-251. AR antoninianus (23 mm, 3.33 g, 7 h). Rome mint, Struck A.D. 251. Q HER ETR MES DECIVS NOB C, radiate and draped bust right / PRINCIPI IVVENTVTIS, Herennius standing left, holding baton and spear. RIC 147c; RSC 27. VF/F, toned.