Valentinian I, AE3, Heraclea. 365-366 AD.

DN VALENTINI-ANVS PF AVG, pearl diademed, draped, cuirassed bust right.
GLORIA RO-MANORVM, Emperor advancing right, holding labarum, dragging captive.
Mintmark SMHB.

RIC IX Heraclea 3a, rated Rare.

From Dane's collection (of grotty coins), Feb. 2011.