Looks similar to the voodoo ball. I've seen a few look like this come in from Africa over the years and nothing has come of them yet genetically.

However, I would still breed this one, as it looks a little different than the others I've seen. Typically the super melanistic balls that haven't proven have smaller heads, sometimes buggy eyes, small deformities, etc. This looks promising from what I see. Can you show us a belly pic?

Good luck regardless! I'd love to see something like that prove out!