Volusian. 251-253 AD. AR Antoninianus (3.56 g). 

IMP CAE C VIB VOLVSIANO AVG, radiate, draped and 
cuirassed bust right, seen from behind
IVNONI MARTIALI, Juno seated facing within domed shrine;
(no peacock)

RIC 172; RSC 43; Sear 9750.