Medieval? Lead Jeton/ Token

I was thinking that was maybe a boars head rather than a cheeky alien

It sure looks old and authentic to me. I don't know what it is but I think I've got a good clue for the experts. At the top of the second image, there's a Cyrillic Ya, or "backwards R" [https://en.wikipedia.org/wiki/Ya_(Cyrillic)], which narrows it down a little bit. On the left side of the second image, there's a character that looks like the lunate form of a Greek epsilon. The Greeks didn't use Cyrillic so this character is probably a Ukrainian Ye [https://en.wikipedia.org/wiki/Ukrainian_Ye] or the similar character that predated it from the Church Slavonic language [https://en.wikipedia.org/wiki/Churc...nic_language], which narrows it down a bit more. Good luck getting to the bottom of this mystery!