Herennius Etruscus. AR Antoninianus. 23.5 mm, 3.44 g. AD 249-251. Rome. 

Q HER ETR MES DECIVS NOB C, Radiate and draped bust right.
PRINC IVVENTVTIS, Apollo seated left, holding branch in his right hand and resting his left elbow on lyre.

RIC 145; RSC 22.

With permission of Naville Numismatics Ltd. - Auction 26, Lot 456, Oct. 2016.