Originally Posted by LittleFish
While he looks like a Tobiano, he would most likely be classified as a Tovero by APHA if he was reg. Because Tobi's do not have different colored eyes, that is an Overo trait, yet the white crosses over his back and that is a Tobi trait. So I would say Tovero. I know a horse that is the same as this one. Typical Tobi pattern but cause he has one blue eye he was Reg Tovero.
If you want to learn more about the paint patters, go to APHA's website. APHA.Com - Tovero Pattern
I, too, would classify him as a Tovero, not only because of the one blue eye, but also because of the head white on the underside. Tobianos typically have solid colored heads (with or without a blaze).
BTW, the APHA website says 'One or both eyes blue' for Tovero, but there are Toveros with 2 brown eyes (as well as Tobianos with 2 blue eyes).