Watch List notes:

Constantine I. A.D. 307/10-337. AE nummus (14.47 mm, 1.16 g, 11 h). Constantinople mint, A.D. 330. POP ROMANVS, draped bust of Genius left, with cornucopia on shoulder / Milvian Bridge over Tiber River; CONS/Γ in exergue. RIC 21; LRBC 1066. VF/aVF, black patina with red sandy highlights. Rare. 

The reverse depicts the Milvian bridge, where it is reported, Constantine received a vision from God and converted to Christianity.