Constantine I (AD 307/310–337). Follis (AE, 17 mm, 2.67 g) AD 330–331, Rome mint.

CONSTANTINVS MAX AVG Diademed, cuirassed and draped bust of Constantine I right. / GLORIA EXERCITVS Two soldiers standing facing each other, each holding reversed spear in outer hand and resting inner hand on shield; between them, two standards; in exergue RBP. RIC 335. Nice bust type. Dark patina. Extremely fine.