Not a very good coin and hard for me to get proper light on it. Any recommendations for a light table and magnifier please. Who is this fellow? me thinks there is a horse on the reverse
A better picture would help, but as Archeocultura said, it looks like a Macedonian coin. The one below was struck during the reign of Gordian III-- A.D. 238- 244 reign of Gordian III, c. 238 - 244 A.D. obverse AΛEΞANΔPOY, diademed head of Alexander the Great right. reverse KOINON MAKEΔONΩN B N, Alexander riding his horse Bucephalus right, wearing military garb, cloak flying behind, couched spear in right hand.