Watch List notes:

Constantine I. AD 307/310-337. Æ Follis (26.5mm, 6.39 g, 5h). Treveri (Trier) mint. Struck circa autumn AD 307-late AD 308. Laureate and cuirassed bust right / Mars standing right, holding reversed spear and shield set on ground; S-A//PTR. RIC VI 772a. Near EF, dark green and brown patina, minor roughness/deposits.

From the WRG Collection, purchased from Empire Coins, November 1986.