Constantine II, as Caesar, Æ Nummus. Trier, AD 321. 20 mm. 2.6 gm. Obv: CONSTANTINVS IVN NOB C, laureate and draped bust left, holding Victory and mappa Rev: BEATA TRANQVILLITAS, globe on altar inscribed VOTIS XX; three stars above. PTR in exergue. RIC 312. Unusual bust type. Very Rare.