This model is an updated version of #300115/720201 Mini Whinnies Pintos Sets from 2006-2007 (see separate record). There are slight differences in color and pattern, the hooves are a bit darker, and the white areas are colored plastic compared to the painted white areas of the previous models.
"Your children are in for a surprise each time they open one of the Mini Whinnies Surprise packs! With 18 different horses to collect, including the special pink "Treasure" horse, they will keep coming back for more! This item ships blind, meaning you cannot choose which surprise model you'll get!" www.breyerhorses.com