She's not quite what I was expecting - something along the lines of the earliest pieces in palomino. No, this one, I think is made to match another one. Perhaps 760 American QH Yearling from 1999-2000?
(Photo from Identify Your Breyer.)
QH Yearling, Warehouse Find, 430046, 2017, $30, Breyer, 2/2018.
Personally, the color on mine is a lot like my original Lady Phase!