quite the same:
Constantine the Great - AE Folis - RIC VI Lugdunum 304
Obv:– IMP CONSTANTINVS P F AVG, Laureate, draped and cuirassed bust right (seen from rear)
Rev:- MARTI CO-NSERVATORI, Mars helmeted, in military dress, cloak hanging over right shoulder, standing, right, holding reversed spear, left hand leaning on shield
Minted in Lugdunum (F | T / PLC). Sping A.D. 310-311
Reference:– Bastien XI 531 (34 examples of which 29 with this reverse legend break). RIC VI Lugdunum 304 (C)