Constantine I AE Follis. Trier mint, 310-313 AD.

IMP CONSTANTINVS AVG, laureate, cuirassed bust right.
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.
T-F across fields.
Mintmark PTR.

RIC VII Trier 50.

Sold by Münzen & Medaillen Deutschland GmbH, June 2015.