it kinda looks like a burm ball with the piebald, i dunno
My thought as well..
I dont think that a morph would carry over across species. As they would both need to have a recessive piebaldism allele at the same locus of the chromosome for each species. That's incredibly unlikely. So I highly doubt this is just a piebald-ball x burm hybrid.
That being said, beautiful looking snake! Cant imagine what those are gonna start selling for.
1.0 Striped African House Snake "Marduk"
0.1 Striped African House Snake Ishtar
1.0 black phase Brown House Snake Seth
0.1 black phase Brown House Snake Nephthys