Bronze AE3, 19mm, 3.08gm, issued AD 329/330. Heraclea mint.
Obv: CONSTANTINVS IVN NOB C, Diademed, draped and cuirassed bust facing right.
Rev: PROVIDENTIAE CAESS (SMHA in ex.), Camp gate with two turrets. Star above and star in left field.
References: Sear 17242, RIC 107.