Constantine I. 3.17g; 19mm. 319-320 AD. Ticinum. 

CONST-ANTINVS AVG, helmeted cuirassed bust right

VIRTVS-EXERCIT, two bound captives seated to left and right 
of standard inscribed VOT XX. 

Mintmark PT. 

RIC VII Ticinum 114.

With permission of Roma Numismatics, November, 2009