Constantine I AE follis, London, AD. 312-313. 22mm, 4.93 g

CONSTANTINVS PF AVG laureate, cuirassed bust right.
PRINCIPI IVVENTVTIS, Prince standing right, holding globe and spear.

Star in left field, 
Mintmark PLN

RIC VI London 265

With permission of cngcoins.com, auction 231, Lot 262, April 2010