Valentinian I, AE3, Siscia. 367-375 AD.

DN VALENTINI-ANVS PF AVG, pearl diademed, draped, cuirassed 
bust right.
SECVRITAS-REIPVBLICAE, Victory advancing left, holding
 wreath and palm.

R over Symbol 3 in left field, F in right field.
 
Mintmark: gamma SISC [Symbol 1].

RIC IX Siscia 15a, type xxxv(a)

Courtesy of Wayne Philips on vcoins.com.