Constantine I, AE Follis, Trier AD 307-308. 26.6 mm, 5.97 g

IMP CONSTANTINVS PF AVG, laureate, draped and cuirassed bust right.
MARTI PATRI PROPVGNATORI, Mars, naked but for helmet and chlamys, striding right, holding transverse spear and shield. 

S-A across fields. 
Mintmark PTR.

RIC VI 777.
Scarce.

Contributed by Chris Scarlioli, February, 2020