In 2019, this model was released in the Mini Whinnies 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.
This model is very similar to the 2023 Advent Calendar release, but this model is more of a pearly grey with semi-gloss finish.