Watch List notes:

Hostilianus (250-251) - AR Antoninianus (Rome AD 251, 4.34 g) - IMP CAE C VAL HOS MES QVINTVS AVG Radiate, draped and cuirassed bust right / SECVRITAS AVGG Securitas standing facing, head right, legs crossed, extending hand over head, leaning upon column to right (RIC 191a) - good VF, obv. double-/overstruck?, rev. some porosity. Hostilian as an Augustus is for more rare than as Caesar since he was only Augustus between July and November 251 AD before he died of the plaque or was assassinated by Trebonian Gallus.