Watch List notes:

Constantine I. AD 307/310-337. Æ Follis (22mm, 4.59 g, 7h). MARTI CONSERVATORI Type. Londinium (London) mint. Struck circa AD 312-313. Laureate and cuirassed bust right / Mars standing right, holding reversed spear in right hand and shield in left set on ground to right; *|–//PLN. RIC VI 258; C&T 7.10.010. Brown patina, slight roughness, minor flan flaws on obverse. Good VF. Rare.

From the Paul DiMarzio Collection, purchased from Zach Beasley (Beast Coins), 12 September 2007.