ROMAN EMPIRE. Constantine I, the Great (AD 307–337). Bil follis. Treveri (Trier), ca. AD 310–313. IMP CONSTANTINVS AVG, laureate, cuirassed bust of Constantine right, brow smooth, clean-shaven / SOLI INVICTO COMITI, radiate, draped bust of Sol right. RIC VI 890 3.3g, 23mm