Constantine I AE Follis. Lyons mint, AD 312-313. 3.18g, 20mm.

IMP CONSTANTINVS PF AVG, laureate bust left, wearing 
imperial mantle, holding eagle-tipped sceptre.
MARTI CON-SERVATORI, Mars standing right, helmeted and 
in military dress, cloak spread over upper chest, 
holding upright spear, point downwards, left hand on shield. 

Mintmark PLG.

RIC VII Lyons 10-12 var (unpublished bust type). 

With permission of Roma Numismatics, March 2014.
Auction 7, Lot 1288, March 2014.
Estimate: £100