This sulky set was originally a special run through Aldens Christmas Catalog, until they declared bankruptcy in 1982. The remaining models, without the sulky and harness, were sold through Bentley Sales and Horses International as #46B. Estimated around 700-750 made. The sulky and harness were the regular run set #2400, but also included was a "fuzzy blue shadow roll across the horse's nose, a small white blanket with a black #5 across the horse's back, and a tiny 'head number', a little card printed with the number 5, which attaches to the bridle's crown piece and stands up between the horses's ears." Per Nancy Young's 5th Edition of "Breyer Horses, Riders, & Animals Molds & Models". An estimated 60 of these head numbers were sold by Bentley. Unknown how many full sets were released by Aldens.
In 1982, this model with sulky kit was available through Aldens as #83Y3667.