I just won this coin, which is a rarer type issued by both Magnentius and Nepotian in the name of Constantius II.
Constantius II
A.D. 350
23mm 4.7gm
DN CONSTAN-TIVS PF AVG, pearl-diademed, draped, cuirassed bust right, holding globe. A behind bust.
GLORIA ROMANORVM, Emperor in military dress, shield on left arm, galloping right, spearing barbarian with outstretched arms kneeling left in front of the horse, shield and broken spear beneath horse. In field to right, star.
In exergue RP
RIC VIII Rome 198/ 204
When assigning RIC numbers to these, it is a bit arbitrary since the biggest difference between the issues is size, and there is overlap, i.e. Second series first group (Magnentius) RIC 195- 197 dia. 25- 26mm, second group (Nepotian) RIC 198- 200 dia. 23- 25mm, third group (Magnentius) RIC 204- 205 dia. 22- 24mm