Gratian AV Solidus. Thessalonica. 

D N GRATIA-NVS P F AVG, pearl-diademed, draped and cuirassed bust right, lightly unshaven.
VICTOR-IA AVGG, two emperors, nimbate, seated facing on throne, 
the one on the right holding a mappa in left and the two of 
them holding a globe between them, Victory standing behind 
them with wings spread over their heads, palm branch upwards 
above the ground between them.

Mintmark COM.

RIC IX Thessalonica 34h.
 
With permission of Numismatica Ars Classica, 2003, art. 3050.

Note: The unshaven beard is usually a sign of mourning.