Follis of Constantine the Great AD 307 to 337

Follis of Constantinus I AD 307 to 337 Obv: Laureate,draped & cuirassed bust right (RIC Bust B) IMP CONSTANTINVS PF AVG (RIC Leg 1a) Rev: Mars stg facing, head right, holding spear & shield - star in left field. MARTI CON _SERVATORI In exergue PLN = Mint of Londinium - minted late 312 to May 313 RIC Vol VI No 251(Scarce)