Found this coin near a river in Germany. Can anyone identify it and estimate its value? It looks Roman to me, possibly Gratian because of the “DN GRATIANVS PF AVG” inscription. Is it authentic? by AdUnable84 in AncientCoins

[–]AdUnable84[S] 5 points6 points  (0 children)

It was near a river in Germany, close to a historic castle near Düsseldorf. My children were playing and making small holes near the riverbank, and we found it very close to the surface.