Magnentius, AE3, Siscia.

DN MAGNEN-TIVS P F AVG, bare-headed, draped and cuirassed bust 
right; A behind bust.
GLORIA ROMANORVM, Emperor on horse right, spearing enemy right, 
facing left; shield & broken spear on ground. 

Mintmark dot SIS star.

Bought from an old collection.
Courtesy of Asta Tintinna Numismatica and deamoneta.com, Jun, 2011

Not in RIC; Mionnet; LRBC; etc.
Should be before RIC VIII 318.

Note Coins of Magnentius from Siscia are rare and sought 
after. Magnentius occupied Siscia for only about a month 
before the battle of Mursa on 28 September 351 when Constantius 
II regained control of the town. 
There are numerous fakes of this coin around but this is 
doubtlessly the real thing, having been found in Italy many
years ago.