Every time i am unable to ID a coin in wildwinds or vcoins, it turns out to be a fake, usually with gold & silver coins though... I can always count on someone with an answer here on coin talk though... Here's a bronze which I am unable to locate a formal ID for, what I have is below: Maximus Caesar / Legionary Standards Bithynia Nikaia--AD 236-238. Bronze, 18.mm / 4.gm
A nice example – the catalogue reference would be Howgego 65, I think (information from wildwinds, I don't have this catalogue at hand). Here is another example posted by someone over at Forvm Ancient Coins. You can also find your coin on wildwinds here.