Hello. I can scarcely read Valen on the obverse of this Roman coin . The reverse seems also clear and interesting to me. I could read Republica.. Could you please assist me to better identify it? Thanks.. Charles
Victory walking left, holding wreath and palm. Star in left field. SECURITAS REI PUBLICAE, or safety of the commonwealth. ANT = Antioch mint. Gamma = 3rd officina.
For coins of that time period, consider using this site: http://esty.ancients.info/ricix/ on the AE coins of RIC IX (Valentinian I and later, AD 364 and later).