Constantine I (AD 307/310-337).
Follis
(AE, 20 mm, 2.78 g)
AD 314-315, Lugdunum.

IMP CONSTANTINVS P F AVG Bust of Constantine I right, laureate, draped and cuirassed. / MARTI CONSERVATORI Mars standing front, head right, holding inverted spear in his right hand and placing his left hand on shield set on ground; in left field T; in right field F; in exergue PLC.
RIC 10.
Dark patina. Very fine.