Constantine II as caesar (316-337), Treveri, AE follis (Bronze, 18,7 mm, 2,84 g), struck under Constantine I, 321. Obv:

Constantine II as caesar (316-337), Treveri, AE follis (Bronze, 18,7 mm, 2,84 g), struck under Constantine I, 321. Obv: CONSTANTINVS IVN NOB C, laureate and draped bust of Constantine II left, holding Victory and mappa.
Rev: BEATA TRANQVILLITAS, globe on altar inscribed VOT - IS - XX, three stars above, PTR in exergue.
Ref: RIC 312.