A nice piece.
Obverse: bust of the emperor in military dress, holding a spear and shield, in the rim legend:
D N IVSTI-NVS P AVG;
Reverse: angel standing in front, holding cross and globe, surrounded by legend:
VICTORI-A AVGGGΓ, in field *, in segment CONOB.
Gold, diameter 19/20.5 mm, weight 4.57 g, axis 6 h.