Constantine I AE follis of Cyzicus. AD 307-337. Struck AD 324-325. 20 mm, 2.92 g.

CONSTANTINVS AVG, laureate head right.
PROVIDENTIAE AVGG, campgate, 8 layers, two beacons, star above, no doors.

Mintmark SMK Delta.

RIC VII 24. 

With permission of Roma Numismatics E-Sale 117, Lot 1230, Feb. 2024.