Nepotian. Usurper, AD 350. AE22mm, 4.59 g. Rome mint. 

FL NEP CONST-ANTINVS AVG, rosette-diademed, 
draped and cuirassed bust of Nepotian right.
GLORIA ROMANORVM, Nepotian on horseback right, spearing 
enemy; shield and broken spear beneath the horse, star in 
upper right field. Mintmark RS.

RIC VIII 200 var. (legend and bust type); LRBC 643 var. 
(ditto). 
Ex Gordon S. Parry Collection. 

With permission of cngcoins.com, Sept. 2008.