Watch List notes:

Constantine II. As Caesar, A.D. 317-337. AE 3 (19.9 mm, 3.17 g, 5 h). London mint, Struck A.D. 323-324. CONSTANTINVS IVN N C, helmeted and cuirassed bust left / BEAT TRANQLITAS, globe on altar inscribed VOT/IS/XX, three stars above, PLON in exergue. RIC 287. VF.