Watch List notes:

Constantine I 'the Great' Æ 17mm. Treveri, AD 310-311. CONSTANTINVS AVG, laureate and cuirassed bust to right / MARTI CONSERV, Mars helmeted standing to right, leaning on reversed spear, resting shield on ground; PTR in exergue. RIC VI 897. 1.39g, 17mm, 6h.

Good Very Fine. Rare.

Ex Dieter Alten Collection, Ex Roma Numismatics Ltd., E-Sale 86, 8 July 2021, lot 1452.