Watch List notes:

Constantine I. AD 307/310-337. Æ Follis (26mm, 6.15 g, 12h). Treveri (Trier) mint. Struck AD 307-308. Laureate and cuirassed bust right / Mars advancing right, holding transverse spear and shield; S|A//PTR. RIC VI 776. Dark gray and brown patina, hairline flan crack. EF.

From the Jack A. Frazer Collection. Ex Classical Numismatic Group 43 (24 September 1997), lot 2517.