Watch List notes:

Herennius Etruscus, as caesar (Trajan Decius, 249-251), Sestertius, Rome, AD 250-251; AE (g 13,36; mm 29; h 12); Q HER ETR MES DECIVS NOB C, draped and cuirassed bust r., Rv. PRINCIPI IVVENTVTIS, Herennius standing l., holding wand and spear; in field, S - C. RIC 171a; C 28.
Rare, traces of cuprite, good very fine.