From Google search, I don't see any way they are from where the seller says.
He also says they were made at the Hunt Co in Chicago, which is wrong. They were distributed by Rigdon and their sucessor White's Club Room Supply in Cincinnati.
Two different collectors say a quanity were 1st found in S OH and N KY.
I can't believe if that is true the KY boys haven't come up with an ID
That said I will try to look into it.