Constantine I, 307/310-337. Follis (Bronze, 20 mm, 2.72 g, 3 h), brockage mint error, Siscia, circa 320. IMP CONSTA-NTINVS AVG Helmeted and cuirassed bust of Constantine I to right. Rev. Incuse of obverse. A sharp and attractive brockage mint error. Traces of corrosion and cleaning and with minor deposits, otherwise, about very fine.