Constans AE3. AD 348-350 AD.

DN CONSTANS PF AVG, rosette-diademed, draped and cuirassed bust left, holding globe.
FEL TEMP REPARATIO, emperor standing left, holding labarum and shield, two captives kneeling and facing each other before him.
Star in left field. 
Mintmark ALEA.

RIC VIII Alexandria 65.
Rated Scarce.

With permission of cgb.fr e-Monnaies, lot 197, April 2018.
(described as RIC 56 (which has plain pearl diadem) in error.)