Watch List notes:

Constantine I (306-337), Nummus, London, AD 314-315; AE (g 3,18; mm 20; h 6); IMP CONSTANTINVS AVG, laureate and cuirassed bust r., Rv. MARTI CON - SERVATORI, Mars standing r., holding spear and shield; in field, S - F; in ex. MLL. RIC 24.
Extremely rare, extremely fine.