Found today new coin. Can you recognize this emperor? On back of coin is bull. I think it's Dupondius. Coin is a pretty good condition. 13g 28mm Today I also found nice bronze roman fibula horse.
I agree with TIF about it being a Septimius Severus founder type. It looks provincial, not imperial. By size it might be, for convenience, called a "dupondius," but I suspect the real denomination was local.