Watch List notes:

Constantine I. AD 307/310-337. Æ Follis (21.5mm, 4.06 g). Contemporary imitation. Uncertain mint in the Danube basin. Struck circa AD 320s. Helmeted and cuirassed bust right / Two Victories standing vis-à-vis, holding inscribed shield on altar. Overstruck on an a Siscia mint follis of Constantine I. Sergeev 232-7. For undertype cf. RIC VII 3 (Siscia). Green patina. In NGC encapsulation 4530021-005, graded Ch AU, Strike: 3/5, Surface: 3/5, light smoothing. Remarkably clear undertype. Very interesting.