Constantius II, AE3. 351-352 AD. Trier.

DN CONSTANTIVS PF AVG, pearl-diademed, draped, cuirassed bust right.
SALVS AVG NOSTRI, Chi-Rho flanked by A and w. 

Mintmark TRS star. 

RIC VIII Trier 332.
Rated scarce.

From a German auction, 2010.