Constantius II, Constantinople.

DN CONSTAN-TIVS PF AVG, pearl diademed, draped, cuirassed bust right, delta behind head
FEL TEMP RE-PARATIO, soldier spearing fallen horseman, who is 
unbearded, wearing a Phrygian helmet, clutching horse's neck.

B in left field, star in centre
Mintmark: CONS and officina letter (B?). 

RIC VIII Constantinople 114, rated scarce

Contributed by George Clegg (biggyg2), February, 2012