Watch List notes:

Constantine I. A.D. 307/10-337. AE follis (19.49 mm, 3.18 g, 6 h). London mint, struck A.D. 320-321. CONSTANTINVS AVG, helmeted and cuirassed bust right / VIRTVS EXERCIT, two captives seated between banner with VOT/XX; PLN in exergue. RIC 191. EF. 

Ex CNG.