Watch List notes:

Constantine I. AD 307/310-337. Æ Follis (18.5mm, 3.13 g, 6h). Siscia mint, 5th officina. Struck AD 320-321. Laureate head right / VOT/ XX in two lines; all within wreath; –|–//ЄSIS*. RIC VII 159. Brown patina with copper highlights. Choice EF.