Watch List notes:

Constantine I. A.D. 307/10-337. AE follis (20.46 mm, 3.35 g, 1 h). Constantinople mint, struck A.D. 327. CONSTANTINVS MAX AVG, laureate head right / LIBERTAS PVBLICA, Victory standing left on galley, wreath in both hands; B left, CONS in exergue. RIC 18. VF. Rare. 

From the Joseph Donzanti Collection; Ex Roma Auction 1.