Constantius II, AE of Siscia. 21 mm, 3.5g. 

DN CONSTAN-TIVS PF AVG, pearl diademed, draped, cuirassed bust right.
FEL TEMP REPARATIO, radiate phoenix standing right on rocky mound.

Mintmark: BSIS[SYM4] (like an curved Y). 

RIC VIII Siscia 240 var (symbol). RIC lists only symbol 2 for officina B.

Contributed by Grahame Dunn, July 2015