Watch List notes:

Constantine I. AD 307/310-337. Æ Follis (26mm, 6.32 g, 6h). Treveri (Trier) mint. Struck AD 307-308. Laureate and cuirassed bust right / Mars standing right, holding reversed spear and resting hand upon shield; S/A//PTR. RIC VI 772a. Red-brown surfaces with residual silvering around devices, light roughness. Good VF.