Here is another picture of the marble I posted earlier that I thought could be champion. This marble has some surface swirling going on, there is white translucent aventurine glass also. The size is 21/32" . Great marbles everyone.
I don't know about Barberton, it was just in with a group I got recently. It has a regular pontil, kinda thought maybe "Shanghai". But could be Barberton green? Size is 21/32"