Constantius II. AE23. Rome. 350-351 AD.

DN CONSTAN-TIVS PF AVG, pearl diademed, draped, cuirassed bust right,
holding globe, A behind head.
GLORIA ROMANORVM, on horseback, galloping right, (no shield), 
spearing barbarian wearing Phrygian helmet and with outstretched 
arms kneeling left in front of the horse; shield and broken spear 
beneath horse.
Star in upper right field. 
Mintmark: RT.

RIC VIII Rome 204. Rated Scarce.

Courtesy of bargainbinancients.com, March 2010.