Hostilian billon antoninianus. Antioch mint. AD 251.

C OVL OSTIL MES COVINTVS CAESAR, three dots beneath bust, radiate, draped bust right.
ADVENTVS AVG, emperor in military dress, on horseback, 
riding left, holding sceptre and raising right hand. 

RIC 193a; Cohen 2.
Rated rare.

With permission of TimeLine Auctions (www.timelineauctions.com), December, 2013