Gratian, AR Siliqua, August 9, 378-August 25, 383, Fourth Period, Rome, Officina 4D N GRATIA_NVS P F AVGPearl-diademed, draped, cuirassed bust right VRBS-ROMA Roma seated left on throne, Victory on globe in right hand, reversed spear in left R*Q in exergue 18mm x 19mm, 1.98g