Constantine I (AD 307/310–337). Follis (AE, 19 mm, 2.95 g), Rome mint, 326.

CONSTANTINVS AVG Laureate head of Constantine right / PROVIDENTIAE AVGG Camp gate with two turrets and open doorway; star above; R(wreath)S in exergue.
RIC 287. Attractive portrait. Dark redish-brown toning. Almost extremely fine.