This coin is too well worn for me to identify it, but I am hoping that someone may see something that they recognize and be able to point me in the right direction? (Minimizing the photo seems to help.)
Looks like you've got Vetraino, Constantius II, or Constantius Gallus on your hands: https://www.tesorillo.com/aes/050/050i.htm
At least, that's what it looks like to me, and if that's an S I see at 2 o'clock on the obverse, you can eliminate Vetraino.
And if that is an S, the two letters that follow look a lot more like PF than IV. I'd bet a dollar that's Constantius II.
I think I can read VIRT on the rear so some form of Virtus? My eyes hurt but I think the obverse legend matches CONSTANS.
Two Victories walking left, facing each other seems to be CONSTANS, ROM (Rome) mint, (per Tesorillo), but if the mintmark is SMK (Cyzicus) I cannot find this obverse with that mintmark in RIC under Constans. Where am I going wrong, please?
I believe it's Constantius II or maybe Constans. It's not Constantius Gallus (he never wears the 1980's looking headband known as a diademed).
I really do appreciate the input from everyone on this one. No easy task. I am going with (similar to) HONORIUS RIC X Cyzicus 68 var. (Courtesy of Wildwinds)
IF I am right, it ties in with . . . Well spotted @hoth2 Spot on @Jay GT4 Absolutely correct, Martin Got it, Chris. Again, thanks to everyone.