I'm not sure whether the Arctic or Antarctic qualify as countries. As most of the Arctic is in Canada, Canada has plenty of these signs. I grant you, the Antarctic is is questionable - but it has no formal government and is certainly not a country. Hmmmm.
I've certainly not been to either place but I'm confident that there isn't one either in the Arctic or the Antarctic. That's a lot of land mass to noit have a Mc Chucks! Paul