Watch List notes:

Constantine I, 307/310-337. Follis (Bronze, 19 mm, 2.43 g, 12 h), Ticinum, 313. IMP CONSTANTINVS P F AVG Laureate and cuirassed bust of Constantine I to right. Rev. MARTI CONSERVATORI / ✱ / PT• Mars standing front, head to right, holding inverted spear in his right hand and placing his left on shield set on ground. RIC 18. Very fine.