Theodosius, AV Solidus. Sirmium mint. Struck AD 393-395. 

DN THEODOSIVS PF AVG, rosette-diademed, draped, cuirassed bust right.
VICTOR-IA AVGGGS, emperor standing right, holding labarum and Victory on globe, spurning captive at foot. S-M across fields. Mintmark CONOB. 

RIC IX Sirmium 14a var (bust type and officina).

RIC does not list rosette diadem (1B) or officina S for this AVGGG series.