This coin was absolutely unrecognizable. I had put it in the culls. Then I thought I might try to find something on it. It is rough and not a very good job of cleaning. I'll take some heat on that. I may try to get it in better condition. But I just wanted to know what it was. I think it is a Antoninus Pius Sestertius. Which one, I am not sure.
marcus had M ANTONINVS AVG legend on many of his coins, also looks to have the radiant crown making it a dupondius, my best guess is https://numismatics.org/ocre/id/ric.3.m_aur.1065 or https://numismatics.org/ocre/id/ric.3.m_aur.1067
@beluga Thanks for the information. I learn something every day. I never knew that about Marcus Aurelius.
Agree, the portrait looks like that of Marcus Aurelius, not Antoninus Pius, and yes, radiate crown typically indicates a dupondius.