Constantine  I Magnus (307-337 A.D.) - AE3 - 18.09mm, 2.06gr
Obverse - CONSTAN-TINVS AVG
Constantine, his laureate head right.
Reverse - PROVIDEN-TIAE AVGG,
Campgate with six rows, two turrets,  no doors,
star above, top and bottom row blocks.
SMK Delta dot in Exergue

Minted at the 4th officina in Cyzicus (Balkiz, Turkey) between 324 and 325 A.D.
Reference:
Bruun, P.M., "Roman Imperial Coinage", Volume 7 (RIC), Cyzicus, p647, nr 24, obverse 1-B1
Failmezger, V., "Roman Bronze Coins From Paganism To Christianity 294-364 A.D.", nr 352cCI
Carson, R.A.G., Hill, P.V., & Kent, J.P.C., "Late Roman Bronze Coinage",  Part I, p28, nr 1187
Sear, D.R., "Roman Coins and their Values" (RCV 4th Revised Edition), p326, nr. 3878, variety
Van Meter, D., "Handbook of Roman Imperial Coins", p292, nr 85
Quality: Fine+