Constantine  II (337-340 A.D.) -  AE3 - 19.36mm, 3.19gr
Obverse - CONSTANTINVS IVN NOB C
Constantine II, his laureate head right.
Reverse - PROVIDENTIAE CAESS,
Campgate with seven rows, two turrets,  no doors,
star above, top row dots and arches in blocks, bottom row blocks.
delta SIS double-crescent in Exergue
Minted at the 4th officina in Siscia (Sisak, Croatia) in 328 or 329 A.D. during his reign as Caesar under Constantine I
Reference:
Bruun, P.M., "Roman Imperial Coinage", Volume 7 (RIC), Siscia, p452, nr 216, obverse legend 7, bust B1.
Sear, David R., "Roman Coins and their Values" (RCV 4th Revised Edition), p332, nr. 3948, variety
Failmezger, V., "Roman Bronze Coins From Paganism To Christianity 294-364 A.D.", nr 354gCII
Carson, R.A.G., Hill, P.V., & Kent, J.P.C., "Late Roman Bronze Coinage",  Part I, p19, .nr 739
Van Meter, David, "Handbook of Roman Imperial Coins", p295, nr 38, variety with head right
Quality: Fine-