Constans, AE3, 348-350 AD. Trier. 

DN CONSTA-NS PF AVG, pearl diademed, draped, cuirassed bust right
FEL TEMP-REPARATIO, Emperor standing left on galley, holding
 labarum and phoenix on globe. Victory sits at the helm,
 steering the ship. 

Mintmark TRP. 

RIC VIII Trier 215, rated Rare.

With permission of Roma Numismatics, October, 2009