Watch List notes:

Herennius Etruscus as Caesar (249-251). AR Antoninianus, Rome mint. Obv. Q HER ETR MES DECIVS NOB C. Radiate and draped bust right. Rev. CONCORDIA AVGG. Clasped hands. RIC (Trajan Dec.) 138. C. 4. AR. g. 3.21 mm. 22.00 R. Rare. Superb and lightly toned. EF.