VALENS, 364-378 AD. Æ 3 of Siscia. 

DN VALENS PF AVG, pearl diademed, draped, cuirassed bust right.
SECVRITAS REIPVBLICAE, Victory advancing left, holding wreath and palm.
Star over K in left field, Q in right field.
Mintmark ASISCR

RIC IX 15b, type xxvii(a).