Hello all, Am I correct to think this is Sol on the reverse? Would that make it Constantinus I than? Thanks!
I think the obverse is Gallienus. The reverse might be Pax. The space between the V and the G on the reverse suggests a very short reverse legend, such as PAX AVG.
Looking at coins like this is great practice in attribution. It is easy to identify most EF examples. I think most of us here enjoy a mystery and a challenge.