Constantine I AE Follis. 319-320 AD. London mint,

IMP CONSTANTINVS AVG, helmeted, cuirassed bust left, spear over shoulder.
VICTORIAE LAETAE PRINC PERP, two Victories standing 
facing each other, holding between them a shield 
inscribed VOT PR on altar decorated with diamond with a
dot in the centre and a dot in each corner. (Helv. 2b)

Mintmark PLN.

RIC VII London 159, rated R1

With permission of beastcoins.com, June 2016.