Watch List notes:

Constantine I. A.D. 307/10-337. Æ follis (19 mm, 2.72 g). Treveri, ca. A.D. 322/3. CONSTAN-TINVS AVG, helmeted and cuirassed bust of Constantine I right / Incuse of obverse. Green patina, some rough encrustations and porosity. Very fine.

From the Big Sky Collection.

Seemingly from the vast issues of globe on votive altar reverse type struck at Treveri in the early 320s.