A.D. 319 
20mm    2.9gm 

CONSTANT-INVS AVG high crested helmet, cuir., spear across r. shoulder, shield on left arm  
VICT dot LAETAE PRINC PERP[ Joyous (well-earned) victory to the eternal Prince] two Victories stg., facing one another, together holding shield inscribed VOT PR [VOTA POPULI ROMANI (vows of the Roman people)] on altar(type 6e-The letter I). 
dot ASIS dot    

RIC VII Siscia 84   r1

Collection of Victor Clark, www.constantinethegreatcoins.com/