Watch List notes:

Hostilian, as Caesar, 250-251. Antoninianus (Silver, 20 mm, 3.39 g, 12 h), Rome. C VALENS HOSTIL MES QVINTVS N C Radiate and draped bust of Hostilian to right, seen from behind. Rev. PRINCIPI IVVENTVTIS Hostilian, as prince of the youth, standing front in military attire, holding signum in his right hand and inverted spear in his left. Cohen 34. RIC 181d. Somewhat rough, otherwise, good very fine.