I like Mars coins and for some reason I collect coins from Lugdunum. Sometimes those two things collide. Happy day. Constantine the Great - AE Follis Obv:– IMP C CONSTANTINVS P F AVG, Laureate, cuirassed bust right Rev:– MARTI PATRI PROPVGNATORI, Mars, naked, advancing right, holding transverse spear in right hand and shield Minted in Lugdunum (N|_// PLC). Autumn A.D. 307 - 309/310 Reference:– RIC VI Lyons 242 (S). Bastien 462 (9 examples cited - confirming the relatively scarce rating given by RIC) A dark blue-black tone with slight copper highlights at the highest points.
LOVE the 'nose' of the OP but especially that wonderful reverse of Mars!! The 'early' post above has EVERYTHING you could possibly want and love!