Watch List notes:

Hostilian, as Caesar, 250-251. Antoninianus (Silver, 23 mm, 4.03 g, 7 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 left in military attire, holding standard with his right hand and inverted spear with his left. Cohen 34. RIC 181d. Struck from somewhat worn dies, otherwise, very fine.