The original ceramic Hagen-Renaker mold, #459 Mini Percheron
12, was sculpted by Maureen Love Calvert, and leased from the ceramics company by Breyer for production in plastic. Released in 1976, the Draft Horse mold was discontinued along with the other Generation One molds in 2005, though he did make a surprise one-time comeback in 2014 as a bonus model from the Vintage Club.
During this time, Breyer only released four regular runs on this mold, but they more than made up for that with the special runs- twenty six! This made him hands down, the number one most used Generation One mold; his nearest competitor is a full eight runs behind. With the plethora of limited special runs (especially that Riegseckers set!) on this mold, it's safe to say this is a nightmare conga to complete.