OK, so the best I can do with this is say there were Edward III pennies from the Treaty/Post Treaty period bearing the obverse legend you have on your coin. However, given that the lettering, bust, etc. is so crude in its execution, I feel it can only leave you with something continental or perhaps a contemporary counterfeit…UNLESS, of course, it’s something that’s been struck from local York dies?
Looking for Edward III pennies that were struck from local dies, is one I’ll leave to you. I did however, in a brief search, find a Richard II penny struck from Local York dies*, and I feel there are some similarities, so not all is lost.
It might also be worth taking a really close look, under magnification, at the first 3 letters of the kings name, too.
*taken from a dealer’s website, who just happens to be a member on here
Historic Coinage