Constantine I (307-337). AE 27mm, Trier mint, 307-308. Obv. IMP CONSTANTINVS PF AVG. Laureate and cuirassed bust right. Rev. MARTI PATRI CONSERVATORI. Mars, nude, standing right, leaning on reversed spear with right hand and placing left hand on shield; in the fields, S-A; in exergue, PTR. RIC VI 772a. 7.16 g. 27.00 mm. Some bright green deposits. About EF.