Constantine I, AE follis, London. AD 312-313. 3.84 g.

CONSTANTINVS P AVG, Laureate, helmeted and cuirassed
bust left, holding spear and shield.
FELICITAS AVGG N N, Roma leated left, holding branch and
resting left arm on globe. 
Star in left field.
Mintmark PLN.

RIC VI London 248 var (bust type); Saint-Colombier-en-Sarzeau hoard, 3615; Sear 15890 var (bust type). 

Courtesy of Roman Lode on vcoins.com, May 2015.