I just got this nice unofficial issue. Interestingly, it came with an old collectors tag and he did not seem to know it was unofficial; nor did CNG note it when they sold it.
Magnentius
Circa A.D. 350-3
20x23mm 5.2g
[IMP CAE MAGNENTIVS AVG] bare-headed, draped and cuirassed bust right; A behind.
[FELICITAS REIPVBLICE] Emperor standing left holding Victory on globe in right hand and labarum, A in right field.
In ex. TRS
cf. RIC VIII Trier 264