Gratian AE3, 2.33 grams, 18.26 mm. Siscia. 367-375 AD.

Obv: DN GRATIANVS PF AVG, pearl-diademed, draped and 
cuirassed bust right.
Rev: SECVRITAS-REIPVBLICAE, Victory advancing left, 
holding wreath and palm.

Star over P in left field
M in right field
Mintmark gamma SISC.

RIC IX Siscia 15c, type xvii; cf Sear (1988) 4143.

Courtesy of TimeLine Originals (www.time-lines.co.uk), March, 2010