Constantine I, AE follis, London.

CONSTANTINVS PF AVG, helmeted, laureate and cuirassed
bust left, holding spear over shoulder and shield on arm.
MARTI CON-SERVATORI, Mars standing right, helmeted and 
in military dress, holding vertical spear, point 
downwards and resting left hand on shield. 
Star in left field. 
Mintmark PLN. 

RIC VI London 256.

Found in England. Contributed by Karl Tebb, Feb. 2013.
UK Finds database no. 40606.