Constantine I AE3. 318 AD. 

Obv: CONSTANT-INVS AVG, cuirassed bust left in high 
crested helmet, holding spear over far shoulder & shield.
Rev: VICT dot LAETAE PRINC PERP, 2 victories holding shield over altar, letter I on altar.

Mintmark ASIS* in ex. 

RIC VII Siscia 95, rated R3.

Contributed by George Clegg (biggyg2),  September, 2009