Watch List notes:

Constantine I (307-337). AE Follis, Heraclea mint. Obv. IMP CONSTANTINVS AVG. Laureate and draped bust left, holding globe, sceptre and mappa. Rev. PROVIDENTIAE AVGG. Camp gate with three turrets; below, MHTB. RIC 16. AE. g. 2.91 mm. 20.50 About FDC. Fully silvered and lightly toned with golden hues. Exceptional.