here's an unofficial Trier coin. One of the things I like about it is that it has an N-W across the reverse field, instead of A-W.
Magnentius
A.D. 350-3
20x21mm 4.0gm
D N MAGNENTIVS P F AV[G]; bare-headed, draped & cuirassed bust right, A behind bust.
SALVS DD NN AVG ET CAES; large Chi-Rho flanked by N-W
In ex. TRP
Cf. RIC VIII Trier 320