250-251 AD., Herennius Etruscus, Rome mint, Antoninianus, RIC 147c.

Herennius Etruscus as Caesar, Rome mint, 250-251 AD.,
Antoninianus (21-22 mm / 4,22 g),
Obv.: Q HER ETR MES DECIVS NOB C , radiate, draped and cuirassed bust of Herennius Etruscus right, seen from behind.
Rev.: PRINCIPI IVVENTVTIS , Herennius as Princeps Iuventutis, in military attire and with cloak, standing l., wearing boots, holding transverse spear in his l. hand, baton in his outstretched r. hand.
RIC 147c ; Coh. 26 .