Watch List notes:

Constantine I Æ Nummus. Trier, AD 315-316. CONSTANTINVS P F AVG, laureate, draped and cuirassed bust right / MARTI CONSERVATORI, Mars standing right, helmeted and military dress, holding vertical reversed spear in right hand and resting left hand on shield; A-S across fields, PTR in exergue. RIC 81. 3.31g, 21mm, 6h.

Very Fine. Well detailed reverse. Extremely Rare.