TYPE Roman Empire, Constantine I the Great (307-337 AD), bronze half follis, Treveri mint, 1st officina, struck as Caesar 307 AD, 4.36g DESCRIPTION . Obv: Laureate cuirassed bust of Constantine r., legend FL VAL CONSTANTINVS N C Rev: Mars advancing right, helmeted with transverse spear and shield, legend MARTI PATRI PROPVGN, mintmark PTR in ex. REFERENCE: RIC VI 741 (r2) GRADING: AEF, olive green patina with considerable red adhesions, very scarce ORDER INFO: R2563, $75