Watch List notes:

Herennius Etruscus, as Caesar, 249-251. Antoninianus (Silver, 22 mm, 2.83 g, 5 h), Rome, circa 250-251. Q HER ETR MES DECIVS NOB C Radiate and draped bust of Herennius Etruscus to right, seen from behind. Rev. MAR PROP Mars advancing right, holding spear with his right hand and shield with his left. Cohen -. RIC 139. Rare. Very fine.