Watch List notes:

Constantine I (307-337). AE Follis, Treveri mint, 310-315 AD. Obv. CONSTANTINVS P F AVG. Laureate and cuirassed bust right. Rev. SOLI INVICTO COMITI. Sol standing facing, head left, raising hand, holding globe with left; T-F across fields, PTR in exergue. RIC VII 47 (R4). AE. 3.20 g. 21.00 mm. RR. Very rare and superb. Lovely light green brown patina, with earthen deposits, otherwise EF.