Watch List notes:

Constantine I. AD 307/310-337. Æ Half Follis (21mm, 3.32 g, 11h). Rome mint, 3rd officina. Struck AD 312-313. Radiate, draped and cuirassed bust right / VIRT EXE RCIT GALL, X VI across field, Virtus, standing left, head right, holding reversed spear and parazonium. RIC VI 360. Dark green and brown patina. VF. Rare.