It's a paradox, I think.
Probably a paradox lesser platinum. There are a variety of theories about what causes this. The pattern could be due to some sort of genetic anomaly in this case. I think the white areas are the result of having 2 copies of the lesser gene, while the rest of it only has 1 copy. (So, it's half BEL, half lesser).
It does not look like a piebald.
I would repeat this pairing, for sure. It's a very unique looking animal, and it's odd that another hatchling has a white patch.