I think it is just a very weak 2 soldiers, one standard from the time shortly after the death of Constantine I and before the currency reform that ended the two soldiers coins. I could guess at the mintmark - SMKE Cyzicus but in this condition that is a guess.
You can read the Emperor's name, in the legend, on the obverse. If I add spaces, the legend says "DN CONSTANS PP AVG". Therefore, the Emperor seems to be Constans.
Thank you. I can definitely see it on this one now that you pointed it out. I'll remember to make that one of the first things I look for in the future.
It's P F. Coins from this era typically have obverse inscriptions that read: "D N . . . P F AVG", with the emperor's name in between. That's how you can identify the emperor.