Looks like an As of Antoninus Pius 138-161 AD. http://wildwinds.com/coins/ric/antoninus_pius/i.html Rev pics might help pin down the date better.
One question. The top pick looks like there is a seam around the coin. Is this a function of the photograph? I wouldn't assume a coin with an uneven flan like that was a cast, but every time I look at the photo I see the seam.
Here is another look at this coin... There is a seem, I think it is struck, I paid $3 for this years ago and the coin dealer was glad to get it I am sure. I'm happy with it...