It is always helpful to post both sides of the coin, also, measure the diameter in mm. If you go to this website: https://en.numista.com/catalogue/index.php click under all issuers where it says "Advanced Search." Type in the copper for Metal and put in the diameter that you measured. Scroll until you find your coin; it won't take long. Yours is a couple hundred years old and originated out of Europe. I'll leave the rest up to you, let us know what you find out!
Your new pics confirm @afantiques response. England George III most likely a half penny (looks too big to be a farthing in your first post) The date is gone but this style was minted between 1770 and 1775