In 2019, this model was released in the Surprise Series 3 #300193. "You're in for a surprise each time you open one of the 1:64 scale Mini Whinnies Surprise packs! With 18 different horses to collect, including the special copper florentine "Treasure" horse, you will keep coming back for more!" www.breyerhorses.com.
In 2023, this model was released in the 2023 Advent Calendar #700728. Included was over 35 items, including 7 horses, 2 foals, 1 unicorn, and 3 rider dolls. This model may have been overstock from the 2019 run, or a new model painted in the same color/pattern.