Watch List notes:

Constantine I. As Caesar, AD 306-309. Æ Follis (28mm, 7.30 g, 6h). Treveri (Trier) mint, 1st officina. Struck AD 307. Laureate and cuirassed bust right / Mars standing right, holding reversed spear and shield; S-A//PTR. RIC VI 725. Near EF, brown patina, light roughness. Struck on a broad flan.

From the Matthew Rich Collection. Ex Noble 113 (22 November 2016), lot 5025.